It looks this is a cave...

Modelled and rendered fully in Blender. You can find the rock texture in the new Used Textures collection. The sprite, well, it's from Pokémon Black & White.
This is a kind of Wellspring Cave, just to practice a little with textures (and shading, too). It's not bad, but I think I should have worked a little more in textures and putting more rocks.