Cave Control

Cave Control is a mod by Reika that can be used to control the generation of underground structures, such as Strongholds, Mineshafts, and Dungeons. It also allows for other underground tweaks, such as enabling/disabling caves below Y=10 being filled with lava or water, and global/biome cave modes. Global cave mode sets all ravine and cave density multiplier settings to affect all biomes, whereas biome cave mode allows for adjusting the settings in specific biomes. It only supports vanilla biomes, the Rainbow Forest biome, and the Ender Forest biome.