Traveler's map

The Traveler's map is an item added to in version  that leads the player towards a biome and can be any of them.

Obtaining
It can be found in any of Terralith's structures, and is more likely to lead you to a biome with the opposite temperature of the one you're in, making Traveler's map found in the Spire or Glacial hut lead most of the time to warm biomes.