For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Ancient Caverns for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Ancient Caverns v1.0.5 (Latest version)
Ancient Caverns v1.0.1
“If possible, please buy the package to support the developer”
With Ancient Caverns you find a complete tool for your natural underground environment. It comes with over 180 prefabs including different big blocks to create custom rooms and also premade rooms to make it easier. Just add different details from rocks to stalactites, manmade stuff, candles, fungus, etc. Blocks are made to fit among them with a few clicks.
You can also use it as FPS or Top/Down environment since rooms are made of separate pieces so you can remove roofs whenever you want.
Check out [ASSET INFO] link above for extended info.
