Category Archives: SPAIN

The Mystery of the Giant Crystals: How the 36-foot Geode of Pulpí Formed

The Mystery of the Giant Crystals: How the 36-foot Geode of Pulpí Formed

In an abandoned mine in southern Spain, there is a room of pure crystal. 

This is the geode of Pulpí

You have to go to a deep tunnel, get into a ladder in the rocks, and squeeze across a jagged gypsum crystal tube that is barely wide enough for a person. If you make it that far, you’ll be standing inside the world’s largest geode: the Pulpí Geode, a 390-cubic-foot (11 cubic meters) cavity about the size of a cement mixer drum, studded with crystals as clear as ice and sharp as spears on every surface.

While you may have never stood inside a geode, you’ve probably held, or at least seen, one before.

A researcher stands inside the crystal-filled cave known as the Pulpí Geode

“Many people have little geodes in their home,” Juan Manuel García-Ruiz, a geologist at the Spanish National Research Council and co-author of a new paper on the history of the Pulpí Geode, told BBC. “It’s normally defined as an egg-shaped cavity inside a rock, lined with crystals.”

Those crystals can form after water seeps through tiny pores in a rock’s surface, ferrying even tinier minerals into the hollow interior. Depending on the size of the rock cavity, crystals can continue growing for thousands or millions of years, creating caches of amethyst, quartz and many other shiny minerals. 

The crystal columns at Pulpí are made of gypsum — the product of water, calcium sulfate, and lots and lots of time — but not much else has been revealed about them since the geode’s unexpected discovery in 2000.

In a study published in the journal Geology, García-Ruiz and his colleagues attempted to shed some new light on the mysterious cave by narrowing down how and when the geode formed.

García-Ruiz is no stranger to giant crystals. In 2007, he published a study on Mexico’s fantastical Cave of Crystals, a basketball-court-size cavern of gypsum beams as big as telephone poles buried 1,000 feet (300 m) below the town of Naica. Uncovering the history of that “Sistine Chapel of crystals,” as García-Ruiz called it, was made easier by the fact that the crystals were still growing in the mine’s humid bowels. 

At Pulpí, however, the mine was completely dry, and the geode’s crystals had not grown in tens of thousands of years. On top of that, the geode’s gypsum spikes are incredibly pure — so translucent that “you can see your hand through them,” García-Ruiz said.

This means they do not contain enough uranium isotopes to perform radiometric dating, a standard method of analyzing how different versions of elements radioactively decay to date very old rocks. 

“We had no idea what happened,” García-Ruiz said. “So, we were required to make a cartography of the entire mine to understand its very complicated geology.”

The researchers analyzed and radiometrically dated rock samples around the mine for seven years to figure out how the area had changed since its formation hundreds of millions of years ago. The team’s driving question: Where did the calcium sulfate in the Pulpí Geode come from?

Ultimately, the researchers narrowed down the geode’s formation to a window of about 2 million years (not bad for the 4.5-billion-year-old calendar of geologic time). The crystals must be at least 60,000 years old, the team found because that was the youngest age of a bit of carbonate crust growing on one of the largest crystals in the geode. Since the crust is on the outside of a crystal, the crystal below must be even older, García-Ruiz explained.

Meanwhile, the composition of other minerals in the mine suggests that calcium sulfate was not introduced to the area until after an event called the Messinian Salinity Crisis — the near-total emptying of the Mediterranean Sea that is believed to have occurred about 5.5 million years ago. 

Based on the size of the gypsum crystals, it’s likely they started forming less than 2 million years ago, through a very slow-growing process called Ostwald ripening, in which large crystals form through the dissolution of smaller ones, García-Ruiz said. For an everyday example of this process, peer into your freezer.

When ice cream ages past its prime, small ice crystals begin to break away from the rest of the treat. As more time passes, those small crystals lose their shape and recombine into larger crystals, giving the old ice cream a distinctly gritty texture. 

The Pulpí Geode may not be as tasty as ice cream, but merely knowing that magical places like this exist comes with its own sweet satisfaction.

Thanks in part to the research team’s mapping efforts, tourists are now allowed to visit the Pulpí Geode, and García-Ruiz certainly wouldn’t blame you for doing so. Squeezing past the jagged gypsum gateway and into the geode’s cavity for the first time several years ago, García-Ruiz recalled one feeling: “euphoria.”

Archaeology dig in Spain yields prehistoric ‘crystal weapons’

Archaeology dig in Spain yields prehistoric ‘crystal weapons’

When you see a beautiful crystal how do you feel? Perhaps the perfection of the diamond, or the vivid colors of the different gems are your thing? The fact is that people have been fascinated by crystals ever since they had first discovered them.

The gems ‘ names come from ancient cultures that were obsessed with them pretty much, adding them to their jewelry, kitchenware, and weapons.

Do you know that even the Bible describes the new Jerusalem after the apocalypse built all in gems and crystals?

An archeological excavation in Spain reveals that even in the 3rd millennium BC, crystals were an object of fascination and ritual

Archeologists discovered a number of shrouds decorated with amber beads at the Valencina de la Concepción site, and they also found a “remarkable set of “crystal weapons

The Monterilio tholos, excavated between 2007 and 2010, is “a great megalithic construction…which extends over 43.75 m in total.” It has been constructed out of large slabs of slate and served as a burial site.

The period in which this site was built was well known for the excavation of metals from the ground, and where there is excavation – there can also be crystals.

In the case with the Monterilio tholos, the people there found a way to shape the quartz crystals into weapons.

However, the spot where these crystals were uncovered is not associated with rock crystal deposits, so it means that these crystals were imported from somewhere else.

The rock crystal source used in creating these weapons has not been pinpointed, but two potential sources have been suggested, “both located several kilometers away from Valencina.”

As the academic paper which focuses on these crystal weapons states, the manufacture of the crystal dagger “must have been based on the accumulation of transmitted empirical knowledge and skill taken from the production of flint dagger blades as well from the know-how of rock-crystal smaller foliaceous bifacial objects, such as Ontiveros and Monterilio arrowheads.”

The exact number of ‘crystal weapons’ found in the site has been estimated to “10 crystal arrowheads, 4 blades and the rock crystal core of the Monterilio tholos.”

Interestingly enough, although the bones of 20 individuals were found in the main chamber, none of the crystal weapons can be ascribed to them.

The individuals had been buried with flint daggers, ivory, beads, and other items, but the crystal weapons were kept in separate chambers.

These crystal weapons could have had ritualistic significance and were most probably kept for the elite. Their use was perhaps closely connected to the spiritual significance they possessed. Indeed, many civilizations have found crystals as having a highly spiritual and symbolical significance.

The paper states that “they probably represent funerary paraphernalia only accessible to the elite of this time period.

The association of the dagger blade to a handle made of ivory, also a non-local raw material that must have been of great value, strongly suggests the high-ranking status of the people making use of such objects.”

What Discovery of Oldest Human Poop Reveals About Neanderthals’ Diet

What Discovery of Oldest Human Poop Reveals About Neanderthals’ Diet

Neanderthals have consumed vegetables – we know that it has definitely been put under the microscope, thanks to the oldest piece of human fecal matter ever found.

The site where the poop was sampled from

Five soil samples from a known Neanderthal site in El Salt in Spain are thought to be obtained and are estimated to date back around 50,000 years.

The find puts to shame the previous oldest hominid poop discovered in the Western Hemisphere, a 14,000-year-old piece of shit found in an Oregon cave (that particular fecal find is in dispute).

Some brave souls from MIT and the University of La Laguna (“samples were collected by hand,” the researchers said) analyzed the makeup of the samples and found that Neanderthals ate a diet dominated by meat, but definitely ate some plants, as well.

That’s because lead researcher Ainara Sistiaga and his team were able to identify, for the first time, the presence of metabolites such as 5B-stigmastanol and 5B-epistigmastanol, which are created when the body digests plant matter.

The existence of those metabolites “unambiguously record the ingestion of plants,” Sistiage writes in a study published today in PLOS One.

Obtaining the poop wasn’t as gross as you might expect-Sistiage and his team took soil samples, crushed them into a fine powder, and used laboratory equipment to identify tiny pieces of fecal matter.

And direct evidence from something like poop is much better at painting a picture of what Neanderthals ate than analyzing their tools or dental records.

“Except for the evidence of entrapped microfossils and organic residues in Neanderthal teeth, all previous palaeodietary reconstructions have been based on indirect evidence where preferential or selective preservation plays a key role,” Sistiage wrote.

In other words, our previous analyses had a bias toward identifying proteins, because they are easier to detect.

Recent dental records suggested that Neanderthals probably ate plants, but now we know for sure.

We also know, thanks to various biomarkers found in the poop, that Neanderthals had a pretty advanced digestive system that is similar to modern humans. However, Neanderthals wouldn’t have had access to the same medicinal products we have today, such as unify health multi gi 5 and other alternatives that can be used to improve a person’s digestive health. This means that Neanderthals could have been a lot more susceptible to certain illnesses and diseases.

Advanced digestion, healthy diets, and smarts-Neanderthals are beginning to look a lot more like us than we ever could have expected.

The Town that is Literally Living Under a Rock

The Town that is Literally Living Under a Rock

In the province of Cádiz in southern Spain, there is a tiny settlement where individuals seem to have discovered a way to live more efficiently and with nature.

Many of the homes are literally located under the rock, just like the saying and like cavemen, but not exactly.

Concealed from the scorching Spanish sun, Setenil de las Bodegas is a small pueblo Blanco (Andalusian white village) and is home today to almost 3,000 residents and a tourist attraction for thousands.

A Spanish town built into the cliffs. Setenil de las Bodegas, one of the well-known “white villages” in Spain.

At first glance, the place makes one wonder if the houses were formed beneath these rocks, or if it was vice versa.

The first homes were built into the cliff-face thousands of years ago, and over the years have been expanded between the boulders and beneath the rocky overhang that shelters these white houses from the heat of the Spanish summers.

Setenil de Las Bodegas has played an important role throughout Spanish history.

According to popular belief, the natural caves of Setenil were indeed inhabited from the dawn of time, or at least as far back as 20,000 B.C.

At least this is what nearby prehistoric cave settlements suggest. For instance, the Cueva de la Pileta that sits just outside the magnificent mountain top city of Ronda, in Malaga province, just 20 to 30 minutes drive from Setenil, have been found to show signs of humans from the Paleolithic and the Neolithic periods. Drawings inside the caves here are believed to be more than 20,000 years old.

Most amazingly, one large overhang covers an entire block of white houses, providing shade and natural cooling during warm summers in southern Spain.

What this highly unusual village does offer are blinding white houses with rock instead of ceilings for a hundred homes and shops, and olive groves instead of roofs; it’s a unique experience to walk or drink a cup of coffee in the shade below a giant looming rock, as well as a chance to learn the peculiar history of how it got its name and why it was built as it is, here above the Rio Trejo and right in the middle of the well-trodden pathway through the White Villages of Andalucía.

What is known for sure is that it was continually inhabited from the 12th century, in the Arabic Almohad period?

There are also indications of pre-Roman inhabitants and noticeable traces of former Roman dwellers scattered here and there to back a claim that the town existed even earlier, 2,000 years ago when allegedly it was seized and held by the Romans during their invasion of the Iberian peninsula.

View of the town of Setenil de las Bodegas, in the province of Cádiz (Spain).

The same claim says that during the Umayyad conquest of Hispania and the Umayyad Caliphate expansion across Europe in 8th century A.D., Moors captured the whole peninsula.

This village then fell under their rule and it was theirs to keep for seven long centuries until the Christians recaptured it once again, expelled the Moors, and marked the fall of the Nasrid Dynasty (the last Arab Muslim dynasty in Iberia). Which proved to be a harder task than was first believed.

According to town history, Setenil de las Bodegas’s steep and rocky nature proved to be “solid as a rock” and of an advantage to the medieval Arabian inhabitants as they were trying to fend off the Christians’ attacks, which they did successfully six times and over 80 years, allegedly until 1484, when on the seventh, and after 15 days of constant siege, Christian forces finally managed to overrun the town’s castle. What’s left of Castillo de Setenil de las Bodegas speaks about this epic holdout, its rich history, and how this place got its name.

It comes from two Latin words, “septem nihil,” which means seven nothings, or seven times no. As for the second part of its name, “de las Bodegas,” it came from what followed after 1484 and these legendary skirmishes.

The Catholic settlers furnished Setenil as a modern town and brought olives, almonds, and vineyards along with recipes for dried meat specialties when they arrived.

They began to use the shade of the rocks and their natural air-conditioning capability to store their products, especially grapes, usually placed in large storerooms under the giant overhangs.

Which is most probably how the place earned its name de las Bodegas, “of the vineyards.” Unfortunately, the vineyards were all wiped out by phylloxera insect infestation during the mid-1800s, when almost all of the wine industry in Europe was destroyed by these pests.

The same thing still happens to this day. Pests can disturb the lives of so many people, as well as infesting any area that they are seemingly attracted to, such as dirty environments and gardens. Luckily, anyone who is affected by this problem can contact someone like these pest control experts to come and efficiently exterminate all of these pests without causing them harm – something that probably wouldn’t have existed back in the mid-1800s. So, whilst we have come a long way in this area, pests still exist and they always will do, something that the wine industry knew all too well back then.

With that being said, two of the vineyards are still flourishing after all this time on top of the hills of Setenil, and the well-preserved Moorish fortress looms on the top of the ravine in which the village was built.

There’s also a street where one humongous overhang covers a whole block of white-painted cafes and dozens of small restaurants and where a local owner can tell you all about this place while serving you a cup of wine and amazing chorizo, Setenil’s special.

The same thing still happens to this day. Pests can disturb the lives of so many people, as well as infesting any area that they are seemingly attracted to, such as dirty environments and gardens. Luckily, anyone who is affected by this problem can contact someone like these pest control experts to come and efficiently exterminate all of these pests without causing them harm – something that probably wouldn’t have existed back in the mid-1800s. So, whilst we have come a long way in this area, pests still exist and they always will do, something that the wine industry knew all too well back then.

With that being said, two of the vineyards are still flourishing after all this time on top of the hills of Setenil, and the well-preserved Moorish fortress looms on the top of the ravine in which the village was built.

There’s also a street where one humongous overhang covers a whole block of white-painted cafes and dozens of small restaurants and where a local owner can tell you all about this place while serving you a cup of wine and amazing chorizo, Setenil’s special.

Roman Lead Sarcophagus Accidentally Found In Granada

Roman Lead Sarcophagus Accidentally Found In Granada

Roman Lead Sarcophagus Accidentally Found In Granada
Workers remove the sarcophagus in Granada.

When archaeologists began exploring underneath a building in Granada, in the southern Spanish region of Andalusia, they weren’t expecting to find anything of importance.

After all, they were just completing a standard prospection of the Villamena building, as required for any planned underground work in the city to rule out the existence of historic remains.

The survey was going ahead as planned. They found a few remains from the Christian era and from the days of Muslim rule, but nothing truly relevant.

But before finishing the work, they decided to explore a little deeper. And that’s when they found it: a Roman grave covered with sandstone and mud, 2.5 meters below the surface.

Lead sarcophagus after removal from the grave
Lead sarcophagus after removal from the grave

For Ángel Rodríguez, the archaeologist in charge of the survey, the discovery was not a big surprise at first – not until they removed the slab and found a lead sarcophagus underneath. Now, this was certainly unexpected.

Rodríguez believes the sarcophagus dates back to the 2nd or 3rd century AD, a time when lead sarcophagi were not at all common.

In Andalusia, they were expensive as well as difficult to obtain, because the industry only existed in Córdoba, over 200 kilometers away. “Córdoba is the only place where they made lead sarcophagi,” Rodríguez explains.

According to this expert, the sarcophagus “probably belonged to a wealthy family, but that doesn’t mean that we are going to find great jewels inside.” The items buried inside may not be that valuable, given that precious goods were left “for the living,” says the archaeologist.

The main interest in this type of sarcophagus comes from the fact that lead conserves remains very well. This means that, if all goes as the archaeologist’s hope, inside there will be a body, personal valuables, and textiles in good condition, which will allow the team to “learn a lot about the burial ritual,” says Rodríguez.

The sarcophagus was moved last week to the Archaeological and Ethnological Museum of Granada. It will remain there until researchers decide on how to proceed with the opening.

Sarcophagus loaded on the back of a truck for transport to the museum

A multidisciplinary team of physical anthropologists, restorers and archaeologists will be present for the exciting reveal. Once opened, the body will go to the forensic anthropology laboratory at Granada University, while the sarcophagus and goods inside will remain in the museum to be studied, explains Rodríguez.

In Roman times, the historic center of Granada was actually a rural area on the outskirts of the city, and the real epicenter was the Albaicín district.

But there was something interesting about the area: the Darro river ran through it. The river stopped flowing overground more than a century ago in this part of the city when it was buried underground.

This was where the sarcophagus was found. Rodríguez explains that this area, on the banks of the Darro, was used to grow crops, “it was not a cemetery, but perhaps because of the Darro river, it had a special meaning as a funeral area.”

According to the archaeologist, a similar lead sarcophagus was discovered in 1902, but it was plundered by the workers who found it before it reached researchers, who only found “some bones.”

The lead sarcophagus found under the Villamena building, next to Granada Cathedral, weighs between 300 and 350 kilograms and has the same dimensions of a classic coffin: 1.97 meters long and 40 centimeters high. It is slightly wider at the head (56 centimeters) than at the foot (36 centimeters).

On the first inspection, Rodríguez says there is no sign of an inscription but adds that “it still has a lot of clay and sand,” and “we’ll see when we clean it.”

The outside of the sarcophagus has already given researchers many insights, and the inside is expected to give many more when it is opened in a few weeks.

Europe’s Oldest Mosque May Be Buried Underground in This Visigothic City in Spain

Europe’s Oldest Mosque May Be Buried Underground in This Visigothic City in Spain

A geomagnetic look at Reccopolis in 2015.
A geomagnetic look at Reccopolis in 2015.

Reccopolis,  a rural area outside of Madrid, has witnessed an extraordinary archaeological effort, with researchers arriving at an important finding using a geomagnetic instrument that helped map walls and other structures still buried underground.

The ancient, 1,400-year-old city was found to have housed much more than the ruins currently visible at the site would imply: the yet unexplored plots of land include hidden parts of a city palace and what may be one of the oldest mosques in Europe.

Archaeologists have detected long-hidden features of a Visigothic city in Spain, including unexplored parts of a palace and a building that may be one of the oldest mosques in Europe.

Without digging, the researchers used a geomagnetic instrument to reveal walls and other structures still buried underground at Reccopolis, which is in a rural area outside of Madrid. They found that the 1,400-year-old city was far more extensive than the ruins visible at the site today would suggest.

“In every space that we were able to survey, we found buildings and streets and passages,” study co-author Michael McCormick, a medieval historian and archaeologist at Harvard University, told Live Science. 

The Visigoths were Germanic people who established a kingdom in southwestern Europe in Late Antiquity, just before the Middle Ages began. They famously sacked Rome in the year 410.

In the second half of the sixth century, the Iberian Peninsula was the center of Visigothic power. King Leovigild made his royal capital in Toledo, Spain, and farther upstream along the Tagus River, he constructed a new town called Reccopolis in 578.

Reccopolis is located on the Tagus River in Spain.

Excavations have been ongoing at Reccopolis for a few decades, but so far, archaeologists have uncovered only about 8% of the area inside the city walls. When McCormick visited the site in 2014, he saw the remains of the palace, a chapel, and some shops. But he teased his friend, study co-researcher and excavation director Lauro Olmo Enciso of the University of Alcalá in Spain, asking, “Where’s the rest of the city?”

The researchers and a few other colleagues teamed up the next year to perform the first geomagnetic survey of the site. This noninvasive prospecting technique allows researchers to see structures underground by mapping magnetic anomalies beneath the Earth’s surface.

Their results quickly showed that empty spaces inside the city walls of Reccopolis were full of hidden streets and buildings. There was even a suburb outside the city’s monumental gate. The findings were published last week in the journal Antiquity.

“Thanks to this new geomagnetic survey, we have learned that the space encircled by the city’s walls was fully developed and that its population was large enough even to spill beyond the city’s walls,” said Noel Lenski, a professor of classics and history at Yale University, who wasn’t involved in the study. “Just as importantly, this was happening in a period long thought to be characterized by urban decline and demographic collapse.”

This layout shows the ancient city of Reccopolis.

Reccopolis was indeed constructed amid the turbulence of the sixth century. From Western Europe to China, the era is associated with mass migrations, imperial collapse, food shortages, and famine, as well as the first known outbreak of the bubonic plague.

Researchers have recently defined a period of rapid climate change, called the Late Antique Little Ice Age — which lasted from 536 to about 660 and was brought on by a series of volcanic eruptions in the Northern Hemisphere — that may have been the catalyst for the widespread upheaval.

“It’s really remarkable to see the Visigothic monarchy coming together at this time and assembling the resources to be able to found a new city,” McCormick said.

The Visigothic rulers of the region were deposed during the Islamic conquest of 711, and the new geophysical evidence shows some signs of Muslim occupation before the city was abandoned around 800.

The researchers found one large building with a different orientation from all the other buildings on the site, toward Mecca.

The floor plan also resembles that of mosques in the Middle East. McCormick says only excavations will be able to confirm that the building is indeed a mosque. But if it is, it could possibly be the oldest remaining mosque in Europe.

Source: sputniknew