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https://www.smithsonianmag.com/smar...jyAtU-Nr4Hi9r938HR_Ffo3fiE7HNwIZaiYqKAes

Hyenas Hoarded Thousands of Human, Animal Bones in Saudi Arabian Lava Tube

The huge stockpile includes camel, rodent and cattle remains
Isis Davis-Marks

Isis Davis-Marks

Correspondent
August 6, 2021
Hyena Cave
Researchers uncovered the remains in the Umm Jirsan lava tube in Saudi Arabia. Stewart et al. / Archaeological and Anthropological Sciences, 2021

Archaeologists in northwestern Saudi Arabia have unearthed a massive collection of bones likely stockpiled by striped hyenas over the past 7,000 years.

Found in the Umm Jirsan lava tube system—a sprawling network of tunnels formed by volcanic activity—the hundreds of thousands of bones belong to at least 14 kinds of animals, including cattle, caprids, horses, camels, rodents and even humans. The researchers’ findings are newly published in the journal Archaeological and Anthropological Sciences.

Lead author Mathew Stewart, a zooarchaeologist at the Max Planck Institute for the Science of Human History in Germany, tells Gizmodo’s Isaac Schultz that the team identified hyenas as the culprits after analyzing cuts, bites and digestion marks found on the bones.

“Striped hyena are very avid accumulators of bones,” Stewart says.

Researchers have been investigating the site, which is located in the country’s Harrat Khaybar lava field, since 2007. But they only ventured into the cavern’s depths a few months ago. (Per Gizmodo, another group of archaeologists reported hearing possible hyena snarls in the tubes, prompting them to keep their distance.)
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Corroded bones found in the lava tube Stewart et al. / Archaeological and Anthropological Sciences, 2021

For the study, the team analyzed 1,917 bones and teeth recovered from the lava tube. Radiocarbon dating of a small number of these samples found that they ranged in age from around 439 to 6,839 years old, suggesting “a long use of the lava tube system by carnivores,” per the paper.

In a Twitter thread quoted by Al Arabiya English’s Joanne Serrieh, Stewart notes that hyenas transport bones “to dens to be consumed, fed to young or cached.” The study adds that the carnivores engage in both hunting and scavenging activities, killing some animals while simply hoarding the remains of others.

A key sign that hyenas were responsible for the huge pile of bones was the presence of human skull fragments. The mammals are notorious for rummaging through graves for grub.

“It’s always just the skullcap that survives,” Stewart tells Gizmodo. “[Hyenas] seem to not really be interested in skull caps. We found maybe five or six skullcaps with gnaw marks on them at the site, but only the skullcaps. Nothing else.”

Lone hyenas typically snack on dead animals. But packs prefer to hunt, targeting prey like antelopes, hares, rodents and birds.

Umm Jirsan is far from the only example of hyenas stockpiling huge assemblages of bones. As Riley Black wrote for National Geographic in 2010, the Srbsko Chlum-Komin Cave in the Czech Republic contains more than 3,500 well-preserved large mammal bones collected by the carnivores.

The new study took place as part of the Palaeodeserts Project, which seeks to track human and animal migration across the Arabian Peninsula. Saudi Arabia’s harsh weather makes this task difficult: Hot conditions can make bones break down, and some ancient remains actually disintegrate when touched.

“The most surprising thing comes down to just how well preserved the material is, and how much material there is, given that in Saudi we have no faunal remains, really,” Stewart tells Gizmodo.

In the Twitter thread, Stewart lauds the lava tube’s “excellent conditions for preservation of bone.”

He adds, “Umm Jirsan (and other similar sites in the region) is likely to hold valuable insights into the ecologies and environments of Holocene Arabia. This study is just the tip of the iceberg.”


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I thought this would be about Kameltoe Harris, ooops.


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And you thought humans were the only ones who collected needless odds and ends, huh? grin

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Trophy hunter's. They are slinky creepy looking creatures.

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I recently saw a program about those lava tubes. Pretty interesting.


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Re the old Swahili proverb: In the end, when all is settled, Fisi will get you.

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So that’s where jimmy hoffa went.


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