Geyser Biome

Geysers will appear in this biome (approximately 35-40 geysers and 0.5-2 blocks high), it will be a huge warm biome that will be connected by a network of underground water caves, geysers will occasionally erupt, the streams themselves will rise up to 30 blocks high and they can get up and fly. The biome itself will spawn in mesa, desert, and most cold biomes.

EXTRA: If you ever add volcanoes, have underwater caves start with volcanoes.