Laser Scans Detect Hidden Buildings and Tunnels Beneath Alcatraz Prison

iStock.com/f8grapher
iStock.com/f8grapher

Isolated in the San Francisco Bay and surrounded by steep cliff faces, Alcatraz Federal Penitentiary seemed like the most secure place to keep dangerous criminals in the mid-20th century. But it's recently come to light that every inmate on Alcatraz Island lived above a series of potential escape routes that predated the prison's construction, the San Francisco Chronicle reports.

In a new study published in the journal Near Surface Geophysics, archaeologists reported their discovery of structures and artifacts beneath the Alcatraz prison yard, including underground buildings, tunnels, and ammunition magazines. Guided by historical maps, documents, and photographs, they used laser scanning technology and ground-penetrating radar to locate the subterranean fortress close to the surface.

The site dates back to the mid-19th century, when Alcatraz Island was used for military purposes. The same natural features that would later make Alcatraz an appealing prison also made it an ideal coastal fortification. Enough brick buildings were built there to house 200 soldiers and enough food was shipped in to feed them for four months.

But the fortification wasn't used for its original purpose for very long. It was transformed into the West Coast's official military prison during the Civil War, and in the 1930s, the government turned it into a federal prison. Instead of tearing down the forts and tunnels leftover from its military days, workers left them intact and built over them to save money. Archaeologists plan to investigate the underground structures further without disturbing the historic site.

Alcatraz Prison closed in 1963, so the underground tunnels no longer pose a security problem. Today the island is part of the U.S. National Park Service and is a popular tourist attraction.

[h/t San Fransisco Chronicle]

The Fossil of a Human-Sized Penguin Has Been Unearthed in New Zealand

DurkTalsma/iStock via Getty Images
DurkTalsma/iStock via Getty Images

Penguins are known for looking cute and cuddly, but if the monster penguins of the Paleocene epoch were still around today, they might have developed a different reputation. As The Guardian reports, the fossil of a new species of one of these giant prehistoric penguins was recently discovered in New Zealand, and scientists say it would have gone head-to-head with many adult humans.

The bird, dubbed Crossvallia waiparensis, stood about 5 feet 3 inches tall and weighed about 175 pounds. For comparison, emperor penguins weigh up to 88 pounds and can reach 3 feet 8 inches in height. The prehistoric bird waddled the Earth some time between 66 and 56 million years ago—shortly after the mass extinction event that wiped out the dinosaurs and marine reptiles, which were probably its main predators.

An amateur paleontologist named Leigh Love discovered the creature's fossilized leg bones on New Zealand's South Island. From those fossils alone, a team of scientists from the Canterbury Museum in New Zealand and the Senckenberg natural history museum in Germany were able to estimate the penguin's height and weight and determine that it belonged to a previously undiscovered species. The large leg bones also indicate that the animal was more reliant on its feet for paddling through the water than the penguins of today.

Crossvallia waiparensis is massive by today's penguin standards, but it's not even the largest prehistoric penguin that we know of. When carnivorous reptiles began disappearing from the world's oceans, the waters opened up for new predators like penguins to flourish. Kumimanu biceae is estimated to have weighed about 223 pounds; Palaeeudyptes klekowskii may have weighed 253 pounds and stretched 6 feet 5 inches long.

[h/t The Guardian]

Scientists Are Creating a 3D Model of an 18th-Century ‘Vampire Witch’ Who Was Tortured to Death

Tonkovic/iStock via Getty Images
Tonkovic/iStock via Getty Images

In 2014, archaeologists uncovered a skeleton in Kamień Pomorski, Poland, with a brick wedged in its mouth and stakes driven through its legs. They believed the man was put to death in the 18th century because townspeople thought he was a vampire.

Now, genetic and forensic analysis has shown that the vampire burial site didn't contain a man at all: It was a 5-foot-6-inch, blue-eyed, blonde woman who was at least 65 years old when she died. Newsweek reports that scientists at the Pomeranian Medical University in Szczecin, Poland are now making a 3D computer model of the woman’s skull, which they plan to use to recreate what her face looked like.

The Forensics Genetics Unit at the university will then build her face on a physical model from layers of plastic material and reveal it to the public within the next few months. Andrzej Ossowski, the head of the unit, told the website Science in Poland that he hopes a museum might display the rendering. “We want to show that with the help of modern methods, we are able to replace skeletons that are very common in museums with 3D models based on research,” he said.

He said that townspeople may have killed the woman because they thought she was a witch, and they gave her an “anti-vampiric” burial to prevent her from rising from her grave à la Nosferatu. The brick in her mouth was meant to weigh her down—in other burials a sickle might have been placed across the neck of the body, which would slit the revenant's throat should it try to rise.

We often think of Salem when it comes to witch trials, but they were common throughout Europe before the 19th century, and archaeologists have discovered “anti-vampiric” graves in Poland, Bulgaria, and Italy. Wondering if you might have qualified as a witch during the 17th-century period of Puritan paranoia? Find out here.

[h/t Newsweek]

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