The Ancient Battleground Key is a valuable item in Dragon's Dogma 2 that players can obtain in the area to the north of Checkpoint Rest Town. While many fans will, rightfully, believe that the key is used to open something within the Ancient Battleground, they may still struggle to locate the locked object. For those players that find themselves in that situation, this guide details the precise position of the door that can be unlocked with the Ancient Battleground Key in Dragon's Dogma 2.