With the Cavern mod, new dimensions, mobs and even food will be added to the game. New dimensions will consist entirely of caves and hide their secrets and treasures that you have to discover and find.
Cavern Mod for Minecraft 1.15.2/1.14.4
In the caves you can find new mobs, ores that you have not seen before and some underground food. With the help of new ore you can produce new armor, weapons and even tools.
Download Link: cavern_1.2_v2.2.6