A map can lead you to any of the expansion’s first five zones. As of patch 7.05, no map leads you to Living Memory, but a new 8-man map should be added in future patches with treasures hidden ...

If you have a Timeworn Br’aaxskin Map in Final Fantasy 14, you’ll need to find where to dig it up in five of the Dawntrail maps. We list out where to find them.

Before you can Decipher a Treasure Map, you'll need to complete the Level 36 side quest Treasures and Tribulations. To start this quest, speak to Ealdwine in Eastern La Noscea (X:21.0, Y:21.1).