https://www.pcgamer.com/fallout-76-has-red-dead-style-treasure-maps/

There are dozens of treasure maps hidden in Fallout 76 which bear an uncanny resemblance to the ones found in Red Dead Redemption. Each map depicts some crudely drawn scenery complete with an all-important X, and that's basically it. You have to rely on your eyes and memory to find the treasure, so spelunking in the Appalachian frontier is just as fun as it was in the Wild West.

During a recent gameplay event Bethesda held in West Virginia, we found and completed our first treasure map, "Forest Treasure Map #08." The map itself was in a mine guarded by a legendary Scorch (picture a Ghoul cooked medium-well). The map was automatically added to the Data section of our Pip-Boy when we found it, so we could easily pull it up to compare our surroundings.