We all have wanted it, we’ve all watched the old YouTubers cover mods for it, and it’s always something we grew up thinking we’d have more encounters with:
Volcanoes!
Extremely rare, this biome is a vent found occasionally underwater and occasionally on land, where magma blocks, magma + lava can all be found. Burning hotter than lava, magma generates beneath the (normally) sealed caldera, and can only be collected in insulated containers, instead of the typical bucket. It could have a myriad of uses, but its primary would be as a type of renewable fuel for the black stone furnace- allowing faster or more effective collection of ingots and materials!
The biome produces ash and smoke in large quantities, filling the air with haze and causing a desolate landscape in the area surrounding- on one hand, if a player has been in the area long enough, the volcano erupts, devastating the nearby area with a pyroclastic flow which can Level structures and trees- but on the other hand, successful installation can relieve the pressure of magma buildup and cause the volcano to remain dormant- and the ash it produces can be collected and used to create more effective farmland- or over time will suffuse into the earth, generating astoundingly tall trees and lush vegetation- creating a veritable paradise! That is, as long as the volcano is tended to… danger looms permanently: its power to bring death is rivaled only by its power to bring life- and thus, to command reverence.