Isostratum
Isostratum is a planetary biome.
These 
isoslime caves are drowning in slime. Slime is everythere here - slimy walls, slimy floor, slime drops from the ceiling, moves towards you and even tries to harm you.
Technical Information
- In-game ID:
ct_isoslime_plasts - File:
/biomes/alterash_prime/esetera entrance/ct_isoslime_plasts.biome