"A man decided to dig a hole in his backyard for a simple landscaping project, but what he unearthed left him in shock. As he ...

Artifacts recovered from digs often include animal remains ... The tools mostly consist of elephant and hippopotamus bones.

Though precisely when the Fenn artifacts were made is unknown, experts used a process known as hydration analysis to get a rough idea of when two obsidian points in the cache were created.