The Unveiling

A man wakes up to find himself inside a crater, with no idea who he is and how he got there. He embarks on a journey to find out who he is, and his purpose. Along the way, he discovers that his arrival heralds great changes to humanity as a whole. The story is set in a post-apocalyptic era where whatever damage has happened. People see the prosperity of the ancient humans, but have no idea what led to their death.