Download Cave Adventure Kit Free Unity. 

This is a complete Cave Environment solution with a large selection of props included creating scenes for FPS & Top Down Hack ‘n’ Slash Role-Playing games.

All the Rock Walls, Stalagmites, Stalactites, Stone bridges and Stone pedestals comes with 3 very different textures sets, all with diffuse and normals
Shadow – Natural brown, dry stone environment
Moss – Lush green, overgrown wet environment
Frozen – Ice cold, Magically Frozen environment

The Cave Adventure Kit is also available as part of a Bundle Purchase
3DForge Classic Kit Bundle

Other 3DForge Bundles Available
Medieval Village Kit Bundle