Humans Sheltered in This Lava Tube for Thousands of Years
Three needs are famously fundamental to survival: food, water, and shelter. According to new research, ancient humans had at least two of those three needs met by a nearly mile-long lava tube about 77 miles (125 kilometers) north of Medina, Saudi Arabia, for at least 7,000 years.
The lava tube in question is named Umm Jirsan, the longest of the lava tubes in Saudi Arabia’s volcanic field, Harrat Khaybar. Today, wolves, foxes, and snakes inhabit the cave, but it was once a popular spot for human pastoralists and their domesticated animals. The new study, published today in the journal PLoS One, examined faunal remains and rock art in the region and adds to a growing body of research into the system.
“The findings at Umm Jirsan provide a new type of archaeological site in the region, and one where organic material like bone and deeply layered sediments are much better preserved,” said Mathew Stewart, a zooarchaeologist at Griffith University in Australia and the study’s lead author, in an email to Gizmodo. “We had no expectations to find archaeology at Umm Jirsan. In fact, we were mostly interested in seeing the large caches of bones that had been previously reported.”
Indeed, a team that included Stewart found evidence in 2021 that striped hyenas were creating bone caches in the back of the cave. There are hundreds of thousands of bones in Umm Jirsan, the team found, belonging to at least 40 species and dating from the Neolithic to as recently as the Victorian Era.
