The Hoard of Bones in the Lava Tunnel

Bones were found in a lava tube that was used to bury the dead. The bones included pieces from over 14 different species, including cows and camels. Some of the bones had been chewed so badly they were partially digested. Archaeologists think these skulls were scavenged from graves. But it wasn't people who built this massive treasure trove - it was hyenas. They passed on the work of stock piling skeletons for seven thousand years.