Elongated Skull

Elongated Skull is a collectible relic found in Shadow of the Tomb Raider.

Information
''This skull is deformed, flatter and longer than what we consider normal. Some people believe this is evidence the Inca were contacted by extraterrestrials, but it's more likely the result of head-binding, a human practice of deformation so ancient it predates written history.''

Inspection
It also has evidence of trepanation, a medical procedure in which a hole is carved in the skull.