Ruins Key (Super Paper Mario)

The Ruins Key is a key item that appears in Super Paper Mario.

History
Ruins Keys are only found in Yold Ruins and there are three of them in total. One is in a small room with two Spiky Tromps that requires the Flip techique to get to, another after hitting a switch with a Squig, and the third is found behind a large staircase requiring the Flip techique to get to. All of these keys unlock the locked doors of Yold Ruins.