Maps to dungeons in world loot tables

[JiFish]

Similar to Explorer Maps. Generate a map centred on the location of the dungeon and add it to the world's loot tables. Put them in various chests and maybe rarely with fishing?

The maps could even be blank and you'd still be able to use them to navigate to the area. Any image we did put on the map would be replaced, just like explorer maps. I think special marker tag can be used to create an "X marks the spot."

I'm not sure if it'd be required to replicate the existing loot as we'd be replacing the the table. Or if there's some way to extended the default tables.