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Citations for cash: researchers have identified services where scholars can buy citations to their papers in bulk. Credit: Vergani_Fotografia/Getty
Research-integrity watchers are concerned about the growing ways in which scientists can fake or manipulate the citation counts of their studies. In recent months, increasingly bold practices have surfaced. One approach was revealed through a sting operation in which a group of researchers bought 50 citations to pad the Google Scholar profile of a fake scientist they had created.
The scientists bought the citations for US$300 from a firm that seems to sell bogus citations in bulk. This confirms the existence of a black market for faked references that research-integrity sleuths have long speculated about, says the team.
The science that’s never been cited
“We started to notice several Google Scholar profiles with questionable citation trends,” says Yasir Zaki, a computer scientist at New York University (NYU) Abu Dhabi, whose team described its sting operation in a February preprint 1 . “When a manuscript acquires hundreds of citations within days of publication, or when a scientist has an abrupt and large rise in citations, you know something is wrong.”
These practices are troublesome because many aspects of a researcher’s career depend on how many references their papers garner. Many institutions use citation counts to evaluate scientists, and citation numbers inform metrics such as the h -index, which aims to measure scholars’ productivity and the impact of their studies.
Citation manipulation can have real consequences. In June, Spanish newspaper El País reported that the country’s Research Ethics Committee has urged the University of Salamanca to investigate the work of its newly appointed rector, Juan Manuel Corchado, a computer scientist accused of artificially boosting his Google Scholar metrics. (Corchado did not respond to Nature ’s request for comment.)
Research-integrity watchers had already suspected that citations are for sale at paper mills , services that churn out low-quality studies and sell authorship slots on already-accepted papers, says Cyril Labbé, a computer scientist at Grenoble Alpes University in France. “Paper mills have the ability to insert citations into papers that they are selling,” he says.
In November 2023, analytics firm Clarivate in Philadelphia, Pennsylvania, excluded more than 1,000 researchers from its annual list of highly cited researchers because of fears of citation gaming and ‘hyper-publishing’.
Hundreds of extreme self-citing scientists revealed in new database
In their sting operation, Zaki and his colleagues created a Google Scholar profile for a fictional scientist and uploaded 20 made-up studies that were created using artificial intelligence.
The team then approached a company, which they found while analysing suspicious citations linked to one of the authors in their data set, that seemed to be selling citations to Google Scholar profiles. The study authors contacted the firm by e-mail and later communicated through WhatsApp. The company offered 50 citations for $300 or 100 citations for $500. The authors opted for the first option and 40 days later 50 citations from studies in 22 journals — 14 of which are indexed by scholarly database Scopus — were added to the fictional researcher’s Google Scholar profile.
The team didn’t share the company’s name with Nature , citing concerns that revealing it could draw attention to its website, or the fake Google Scholar profile they created, because this might reveal the identities of the authors of the studies that planted the fake citations. Asked by Nature whether Google Scholar is aware that faked profiles can be created on its site, Anurag Acharya, distinguished engineer at the company said: “While academic misbehaviour is possible, it’s rare because all aspects are visible — articles indexed, articles included by an author on their profile, articles citing an author, where the citing articles are hosted and so on. Anyone in the world can call you on it.”
In another demonstration of citation manipulation, last month researchers created a fake Google Scholar profile for a cat called Larry listing a dozen fake papers with Larry as the sole author. The researchers posted a dozen more nonsensical studies on the academic social-networking site ResearchGate that cited Larry’s papers. A week or so after Larry’s identity was revealed, Google Scholar removed the cat’s studies, those citing Larry, and the accumulated citations. ResearchGate has also removed the bogus studies citing Larry.
Zaki and colleagues’ sting operation was born out of a broader effort to assess the scale of the fake-citation problem. They used software to examine about 1.6 million Google Scholar profiles that had at least 10 publications. They searched for profiles with more than 200 citations and instances in which researchers’ citations increased by 10 times or more each year or when the rise represented a jump of at least 25% of their total citation count. The team found 1,016 such profiles.
The fight against fake-paper factories that churn out sham science
Zaki says that many citations to the papers on those profiles are from preprint articles that haven’t been peer reviewed and that they are typically listed in the bibliographies of papers but not cited in the main body of the manuscripts.
“Citations can easily be manipulated by creating fake preprints and through paid services,” says co-author Talal Rahwan, a computer scientist at NYU Abu Dhabi.
The authors also surveyed 574 researchers working at the 10 highest-ranked universities in the world. They found that of those universities that consider citation counts when evaluating scientists, more than 60% obtain these data from Google Scholar.
Labbé isn’t convinced by the survey’s claim that Google Scholar is widely used to obtain researchers’ citation metrics. Allegations of citation manipulation on Google Scholar have surfaced in the past, he says, and academics have long suspected that there are vendors offering this sort of service. But the sting operation to reveal a citation seller is the first of its kind, he says.
Guillaume Cabanac, a computer scientist at the University of Toulouse in France who has created a tool that flags fabricated papers that contain odd turns of phrase added to circumvent plagiarism-detection software, says that many studies are cropping up with citations to work that has nothing to do with the topic of the study.
Labbé’s team is building a tool that automatically flags fishy citation patterns that might point to manipulation.
How big is science’s fake-paper problem?
To help with that, Zaki’s team proposes a metric called the citation-concentration index, designed to detect cases in which a scientist receives many citations from few sources. Such activity is often a sign of a ‘citation ring’, in which scientists agree to cite one another to inflate each other’s metrics. “Suspicious ones tend to have massive citations stemming from just a few sources,” Rahwan says.
One fear among integrity sleuths is that fraudsters will conceive subtler practices to avoid being found out. For instance, one way to avoid being detected by the citation-concentration index, Labbé notes, is to buy a few citations at a time and not in bulk.
For Labbé, the way to address citation gaming is to change the incentives in academia so that scientists are not under pressure to accumulated as many citations as possible to progress their careers. “The pressure for publication and citation is detrimental to the behaviour of scientists,” he says.
Nature 632 , 966 (2024)
doi: https://doi.org/10.1038/d41586-024-01672-7
Ibrahim, H., Liu, F., Zaki, Y. & Rahwan, T. Preprint at arXiv https://doi.org/10.48550/arXiv.2402.04607 (2024).
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Low-calorie diets and intermittent fasting have been shown to have numerous health benefits: They can delay the onset of some age-related diseases and lengthen lifespan, not only in humans but many other organisms.
Many complex mechanisms underlie this phenomenon. Previous work from MIT has shown that one way fasting exerts its beneficial effects is by boosting the regenerative abilities of intestinal stem cells, which helps the intestine recover from injuries or inflammation.
In a study of mice, MIT researchers have now identified the pathway that enables this enhanced regeneration, which is activated once the mice begin “refeeding” after the fast. They also found a downside to this regeneration: When cancerous mutations occurred during the regenerative period, the mice were more likely to develop early-stage intestinal tumors.
“Having more stem cell activity is good for regeneration, but too much of a good thing over time can have less favorable consequences,” says Omer Yilmaz, an MIT associate professor of biology, a member of MIT’s Koch Institute for Integrative Cancer Research, and the senior author of the new study.
Yilmaz adds that further studies are needed before forming any conclusion as to whether fasting has a similar effect in humans.
“We still have a lot to learn, but it is interesting that being in either the state of fasting or refeeding when exposure to mutagen occurs can have a profound impact on the likelihood of developing a cancer in these well-defined mouse models,” he says.
MIT postdocs Shinya Imada and Saleh Khawaled are the lead authors of the paper, which appears today in Nature .
Driving regeneration
For several years, Yilmaz’s lab has been investigating how fasting and low-calorie diets affect intestinal health. In a 2018 study , his team reported that during a fast, intestinal stem cells begin to use lipids as an energy source, instead of carbohydrates. They also showed that fasting led to a significant boost in stem cells’ regenerative ability.
However, unanswered questions remained: How does fasting trigger this boost in regenerative ability, and when does the regeneration begin?
“Since that paper, we’ve really been focused on understanding what is it about fasting that drives regeneration,” Yilmaz says. “Is it fasting itself that’s driving regeneration, or eating after the fast?”
In their new study, the researchers found that stem cell regeneration is suppressed during fasting but then surges during the refeeding period. The researchers followed three groups of mice — one that fasted for 24 hours, another one that fasted for 24 hours and then was allowed to eat whatever they wanted during a 24-hour refeeding period, and a control group that ate whatever they wanted throughout the experiment.
The researchers analyzed intestinal stem cells’ ability to proliferate at different time points and found that the stem cells showed the highest levels of proliferation at the end of the 24-hour refeeding period. These cells were also more proliferative than intestinal stem cells from mice that had not fasted at all.
“We think that fasting and refeeding represent two distinct states,” Imada says. “In the fasted state, the ability of cells to use lipids and fatty acids as an energy source enables them to survive when nutrients are low. And then it’s the postfast refeeding state that really drives the regeneration. When nutrients become available, these stem cells and progenitor cells activate programs that enable them to build cellular mass and repopulate the intestinal lining.”
Further studies revealed that these cells activate a cellular signaling pathway known as mTOR, which is involved in cell growth and metabolism. One of mTOR’s roles is to regulate the translation of messenger RNA into protein, so when it’s activated, cells produce more protein. This protein synthesis is essential for stem cells to proliferate.
The researchers showed that mTOR activation in these stem cells also led to production of large quantities of polyamines — small molecules that help cells to grow and divide.
“In the refed state, you’ve got more proliferation, and you need to build cellular mass. That requires more protein, to build new cells, and those stem cells go on to build more differentiated cells or specialized intestinal cell types that line the intestine,” Khawaled says.
Too much of a good thing
The researchers also found that when stem cells are in this highly regenerative state, they are more prone to become cancerous. Intestinal stem cells are among the most actively dividing cells in the body, as they help the lining of the intestine completely turn over every five to 10 days. Because they divide so frequently, these stem cells are the most common source of precancerous cells in the intestine.
In this study, the researchers discovered that if they turned on a cancer-causing gene in the mice during the refeeding stage, they were much more likely to develop precancerous polyps than if the gene was turned on during the fasting state. Cancer-linked mutations that occurred during the refeeding state were also much more likely to produce polyps than mutations that occurred in mice that did not undergo the cycle of fasting and refeeding.
“I want to emphasize that this was all done in mice, using very well-defined cancer mutations. In humans it’s going to be a much more complex state,” Yilmaz says. “But it does lead us to the following notion: Fasting is very healthy, but if you’re unlucky and you’re refeeding after a fasting, and you get exposed to a mutagen, like a charred steak or something, you might actually be increasing your chances of developing a lesion that can go on to give rise to cancer.”
Yilmaz also noted that the regenerative benefits of fasting could be significant for people who undergo radiation treatment, which can damage the intestinal lining, or other types of intestinal injury. His lab is now studying whether polyamine supplements could help to stimulate this kind of regeneration, without the need to fast.
“This fascinating study provides insights into the complex interplay between food consumption, stem cell biology, and cancer risk,” says Ophir Klein, a professor of medicine at the University of California at San Francisco and Cedars-Sinai Medical Center, who was not involved in the study. “Their work lays a foundation for testing polyamines as compounds that may augment intestinal repair after injuries, and it suggests that careful consideration is needed when planning diet-based strategies for regeneration to avoid increasing cancer risk.”
The research was funded, in part, by a Pew-Stewart Trust Scholar award, the Marble Center for Cancer Nanomedicine, the Koch Institute-Dana Farber/Harvard Cancer Center Bridge Project, and the MIT Stem Cell Initiative.
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A new study led by researchers at MIT suggests that fasting and then refeeding stimulates cell regeneration in the intestines, reports Katharine Lang for Medical News Today . However, notes Lang, researchers also found that fasting “carries the risk of stimulating the formation of intestinal tumors.”
Prof. Ömer Yilmaz and his colleagues have discovered the potential health benefits and consequences of fasting, reports Max Kozlov for Nature . “There is so much emphasis on fasting and how long to be fasting that we’ve kind of overlooked this whole other side of the equation: what is going on in the refed state,” says Yilmaz.
MIT researchers have discovered how fasting impacts the regenerative abilities of intestinal stem cells, reports Ed Cara for Gizmodo . “The major finding of our current study is that refeeding after fasting is a distinct state from fasting itself,” explain Prof. Ömer Yilmaz and postdocs Shinya Imada and Saleh Khawaled. “Post-fasting refeeding augments the ability of intestinal stem cells to, for example, repair the intestine after injury.”
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Strategies for overcoming the disagreements that can stymie innovation.
Previous research has found that new ideas are seen as risky and are often rejected. New research suggests that this rejection can be due to people’s lack of shared criteria or reference points when evaluating a potential innovation’s value. In a new paper, the authors find that the more novel the idea, the more people differ on their perception of its value. They also found that disagreement itself can make people view ideas as risky and make them less likely to support them, regardless of how novel the idea is. To help teams get on the same page when it comes to new ideas, they suggest gathering information about evaluator’s reference points and developing criteria that can lead to more focused discussions.
Picture yourself in a meeting where a new idea has just been pitched, representing a major departure from your company’s standard practices. The presenter is confident about moving forward, but their voice is quickly overtaken by a cacophony of opinions from firm opposition to enthusiastic support. How can you make sense of the noise? What weight do you give each of these opinions? And what does this disagreement say about the idea?
For many people, reaching their mid-40s may bring unpleasant signs the body isn’t working as well as it once did. Injuries seem to happen more frequently. Muscles may feel weaker.
A new study, published Wednesday in Nature Aging , shows what may be causing the physical decline. Researchers have found that molecules and microorganisms both inside and outside our bodies are going through dramatic changes, first at about age 44 and then again when we hit 60. Those alterations may be causing significant differences in cardiovascular health and immune function.
The findings come from Stanford scientists who analyzed blood and other biological samples of 108 volunteers ages 25 to 75, who continued to donate samples for several years.
“While it’s obvious that you’re aging throughout your entire life, there are two big periods where things really shift,” said the study’s senior author, Michael Snyder, a professor of genetics and director of the Center for Genomics and Personalized Medicine at Stanford Medicine. For example, “there’s a big shift in the metabolism of lipids when people are in their 40s and in the metabolism of carbohydrates when people are in their 60s.”
Lipids are fatty substances, including LDL, HDL and triglycerides, that perform a host of functions in the body, but they can be harmful if they build up in the blood.
The scientists tracked many kinds of molecules in the samples, including RNA and proteins, as well as the participants’ microbiomes.
The metabolic changes the researchers discovered indicate not that people in their 40s are burning calories more slowly but rather that the body is breaking food down differently. The scientists aren’t sure exactly what impact those changes have on health.
Previous research showed that resting energy use, or metabolic rate , didn’t change from ages 20 to 60. The new study’s findings don't contradict that.
The changes in metabolism affect how the body reacts to alcohol or caffeine, although the health consequences aren’t yet clear. In the case of caffeine, it may result in higher sensitivity.
It’s also not known yet whether the shifts could be linked to lifestyle or behavioral factors. For example, the changes in alcohol metabolism might be because people are drinking more in their mid-40s, Snyder said.
For now, Snyder suggests people in their 40s keep a close eye on their lipids, especially LDL cholesterol.
“If they start going up, people might want to think about taking statins if that’s what their doctor recommends,” he said. Moreover, “knowing there’s a shift in the molecules that affect muscles and skin, you might want to warm up more before exercising so you don’t hurt yourself.”
Until we know better what those changes mean, the best way to deal with them would be to eat healthy foods and to exercise regularly, Snyder said.Dr. Josef Coresh, founding director of the Optimal Aging Institute at the NYU Grossman School of Medicine, compared the new findings to the invention of the microscope.
“The beauty of this type of paper is the level of detail we can see in molecular changes,” said Coresh, a professor of medicine at the school. “But it will take time to sort out what individual changes mean and how we can tailor medications to those changes. We do know that the origins of many diseases happen in midlife when people are in their 40s, though the disease may occur decades later.”
The new study “is an important step forward,” said Dr. Lori Zeltser, a professor of pathology and cell biology at the Columbia University Vagelos College of Physicians and Surgeons. While we don’t know what the consequences of those metabolic changes are yet, “right now, we have to acknowledge that we metabolize food differently in our 40s, and that is something really new.”
The shifts the researchers found might help explain numerous age-related health changes, such as muscle loss, because “your body is breaking down food differently,” Zeltser said.
Linda Carroll is a regular health contributor to NBC News. She is coauthor of "The Concussion Crisis: Anatomy of a Silent Epidemic" and "Out of the Clouds: The Unlikely Horseman and the Unwanted Colt Who Conquered the Sport of Kings."
Storm-scale convection-allowing models (CAMs) are an important tool for predicting the evolution of thunderstorms and mesoscale convective systems that result in damaging extreme weather. By explicitly resolving convective dynamics within the atmosphere they afford meteorologists the nuance needed to provide outlook on hazard. Deep learning models have thus far not proven skilful at km-scale atmospheric simulation, despite being competitive at coarser resolution with state-of-the-art global, medium-range weather forecasting. We present a generative diffusion model called StormCast, which emulates the high-resolution rapid refresh (HRRR) model—NOAA’s state-of-the-art 3km operational CAM. StormCast autoregressively predicts 99 state variables at km scale using a 1-hour time step, with dense vertical resolution in the atmospheric boundary layer, conditioned on 26 synoptic variables. We present evidence of successfully learnt km-scale dynamics including competitive 1-6 hour forecast skill for composite radar reflectivity alongside physically realistic convective cluster evolution, moist updrafts, and cold pool morphology. StormCast predictions maintain realistic power spectra for multiple predicted variables across multi-hour forecasts. Together, these results establish the potential for autoregressive ML to emulate CAMs – opening up new km-scale frontiers for regional ML weather prediction and future climate hazard dynamical downscaling.
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This limited amount of research is perhaps unsurprising, given the common view that swear words are antisocial and offensive (Rassin and Muris 2005; Robbins et al. 2011; Stapleton 2010).Indeed, the denotative (i.e., literal) meanings of swear words are related to taboo topics (e.g., sex), and swear words are often defined as taboo or offensive words ().
A growing body of research shows that swearing, or sometimes just being exposed to swear words, brings about arousal, demonstrated by changes in physiological and cognitive activity (e.g., Harris, 2004, Eilola et al., 2007, Jay et al., 2008, Stephens et al., 2009, Caldwell-Harris et al., 2011). Such studies are experimental in nature and ...
54. In research, you should quote them verbatim. Editing, or censoring, swearing is wrongly representing your research subjects and is thus a form of scientific misconduct. If you need to edit the quote for specific audience you must make it clear that you have done so:
2.1 Swearing in online content. Wang et al. examines the cursing activity on the social media platform Twitter.Footnote 3 They explore several research questions including the ubiquity, utility, and also contextual dependency of textual swearing in Twitter. On the same platform, Bak et al. found that swearing is used frequently between people who have a stronger social relationship, as a part ...
SUBMIT PAPER. Journal of Language and Social Psychology. Impact Factor: 2.0 / 5-Year Impact Factor: 2.9 . ... She is a professor in the Psychology Department at Southern Connecticut State University. Her research focuses on choice and adaptation across the life span, and on promoting emotional well-being. ... Swear(ING) ain't play(ING): The ...
The general idea that certain phonemes or phoneme combinations are intrinsically associated with certain meanings is known as sound symbolism (D'Onofrio, 2013; Sidhu & Pexman, 2018).For example, across languages the nasal sound n is much more likely to occur in words for "nose" than in other words (Blasi et al., 2016; Johansson et al., 2020), and when presented with spiky and curved line ...
Swearing is the use of taboo language (also referred to as bad language, swear. words, offensive language, curse words, or vulgar words) to express the speaker's. emotional state to their ...
Words and Phrases to Avoid in Academic Writing. Published on February 6, 2016 by Sarah Vinz.Revised on September 11, 2023. When you are writing a dissertation, thesis, or research paper, many words and phrases that are acceptable in conversations or informal writing are considered inappropriate in academic writing.. You should try to avoid expressions that are too informal, unsophisticated ...
Previous research showing that swearing alleviates pain is extended by addressing emotion arousal and distraction as possible mechanisms. We assessed the effects of a conventional swear word ("fuck") and two new "swear" words identified as both emotion-arousing and distracting: "fouch" and "twizpipe.". A mixed sex group of ...
In English language learning-teaching, swear words become part of linguistic studies and socio-cultural knowledge for teachers and students. This study aims to resolve two questions, namely first ...
The findings, published on December 6 in Psychonomic Bulletin & Review, support the idea that speakers may euphemize swear words, or "mince oaths"—think using "darn" for "damn"—by ...
While hundreds of papers have been written about swearing since the early 1900s, they tend to originate from fields outside of psychology such as sociology, linguistics, and anthropology. ... When swearing is a part of psychological research, it is rarely an end in itself. Kristin Janschewitz. ... or any of the other curse words that people use ...
A 2015 study found that those who have a healthy repertoire of curse words at their disposal are more likely to have a richer vocabulary than those who don't. This challenges the long-held stereotype that people swear because they can't find more intelligent words with which to express themselves.
Swear words constitute 4% to 13% of everyday speech (Fangersten, 2012). In total, there are currently 70 different taboo words that are used in conversational American English (Fägersten, 2012; Jay, 2009; Jay et al., 2015; Yoga, 2016). In a survey by Jay (2009) conducted between 1986 to 2006, it was found that there are ten staple swear words ...
This paper aims to identify the nature, types, motives, and functions of swear words. Based on the analysis, this study concluded that there are several and different classification systems of 'bad language' and 'swear words' and that is due to the fact that the value of 'badness' in all languages are constantly changing.
This paper investigates the research areas: definitions of English swear words, its history; cultural and sociolinguistic context; psychological function in people; evolution, growth, and ...
Research in communication and linguistics has shown an array of distinctive social purposes of swearing - from expressing aggression and causing offence to social bonding, humour and story-telling.
Provides clarification, similar to "in other words.". Example The reaction is exothermic; that is to say, it releases heat. 13. To put it simply. Simplifies a complex idea, often for a more general readership. Example The universe is vast; to put it simply, it is larger than anything we can truly imagine. 14.
By 1999, they found the amygdala, which is responsible for processing emotion and memory, was highly active when exposed to swear words. But because the amygdala is also connected to the memory function part of the brain, repetition decreases the activity. Basically, if you grew up hearing your older brother or sister slinging some curse words ...
It is advised to use a swear word that you would use in response to banging your head accidentally . If no clear swear words come to mind, the S-word and F-word are the two most common swear words [8, 9] and were used by many of the subjects in the research showing the positive effects of swearing. There is evidence that a patient needs to use ...
For swear words, it's personal preference, but I believe in things like interviews swears that are censored should be marked as such (e.g. [f-word] or "fuck" instead of "f*ck", since the lattermost is a disingenuous representation of what they said). tl;dr It's dependent on who's reading/grading, so check with them and defer to their judgment. 2.
Swear words which start out as innovations in the second generation have also failed to be transmitted successfully to the third generation. These changes, as I go on to argue in the paper, can be largely attributed to the occurrence of language shift in Singapore.
Scientists have figured out what type of paper is the most prone to cut skin. Kaare Jensen, associate professor of physics at the Technical University of Denmark, explains.
Research-integrity watchers had already suspected that citations are for sale at paper mills, services that churn out low-quality studies and sell authorship slots on already-accepted papers, says ...
MIT postdocs Shinya Imada and Saleh Khawaled are the lead authors of the paper, which appears today in Nature. Driving regeneration. For several years, Yilmaz's lab has been investigating how fasting and low-calorie diets affect intestinal health. ... The research was funded, in part, by a Pew-Stewart Trust Scholar award, the Marble Center ...
New research suggests that this rejection can be due to people's lack of shared criteria or reference points when evaluating a potential innovation's value. In a new paper, the authors find ...
Research shows our bodies go through rapid changes in our 40s and our 60s. ... "The beauty of this type of paper is the level of detail we can see in molecular changes," said Coresh, a ...
Jakarta, Indo nesia. nida.husna@uin jkt.ac.id. Abstract- The present study was focused to find out the. students' perspect ive in using the words that were. included as socially impolite. The ...
Storm-scale convection-allowing models (CAMs) are an important tool for predicting the evolution of thunderstorms and mesoscale convective systems that result in damaging extreme weather. By explicitly resolving convective dynamics within the atmosphere they afford meteorologists the nuance needed to provide outlook on hazard. Deep learning models have thus far not proven skilful at km-scale ...
Here, we examine a great Neolithic engineering feat: the Menga dolmen, Iberia's largest megalithic monument. As listed by UNESCO, the Antequera megalithic site includes two natural formations, La Peña de los Enamorados and El Torcal karstic massif, and four major megalithic monuments: Menga, Viera, El Romeral, and the one recently discovered at Piedras Blancas, at the foot of La Peña de ...