I've had this happen twice with the same circumstances in two different worlds. Using a pathfinder map to find a specific biome. Upon coming into draw range for the chunks of the biome while holding the map the game abruptly crashes. I can approach and enter the same chunks without issue without the map.

Crashlog:
https://pastebin.com/u7D73eF2

I don't know what causes this unfortunately.

Issue resolved via Atmospheric update.
Turns out destination biomes were right next to Rosewood forests which were having issues with maps.

https://github.com/bageldotjpg/Atmospheric/issues/8