Underground Lava Tubes Were Desert Pit Stops for Humans 7,000 Years Ago April 17, 2024, 12:35:40 PM Underground Lava Tubes Were Desert Pit Stops for Humans 7,000 Years Ago[html]Researchers determined underground lava tubes in the Saudi Arabian desert served as a shepherd way station.[/html]Source: Underground Lava Tubes Were Desert Pit Stops for Humans 7,000 Years Ago (http://ht**://www.discovermagazine.c**/the-sciences/underground-lava-tubes-were-desert-pit-stops-for-humans-7-000-years-ago) Quote Selected