Hydrothermal Spire

The Thermal Spire is a heat-emitting geologic formation predominantly found throughout the Thermal Spires Biome. They can also be found in various other biomes, though to a much lesser degree.

Appearance
Thermal Spires are tall and conical with a hole at the top of each spire. The hole constantly emits a black smog-like substance, much like Black Smokers do in real life. A yellow sap-like substance can be seen oozing from the hole at the top of each spire.