Hidden Clue

Hidden Clue is a collectible Mam relic found in Shadow of the Tomb Raider DLC The Price of Survival. It is part of the Sibling Tragedy collection.

Information
This key was interred with Sayri's body, which means Amaru put it here. Was he trying to keep it preserved, or keep it hidden? Probably both.

There's a Mayan symbol on it, similar to the ones on the cypher wheel, representing North.