Download Cave System FREE Unity. 

Cave system is a kit designed to help you build an underground level for your game with ease.

Included in the package 2 set of textures for rocks, with a utility script developed to switch with easy between a set of textures. An optional set of textures for emission from cracks of the rocks.
12-floor variants.
The package includes 100 prefabs, almost all provided with LOD’S, subdivided in :

– Flying cabin, with control script to build flight paths
– characters (bat/spider/rat,with animations)
– rocks
– props
– Cave modular pieces