Check out the latest Staff Blog update that talks about what's changed, what's new, and what's up with these "Pixels".
A rock shelter
A rock shelter.
Rock shelters are found at the base of cliffs. There are 5000 rock shelters in the game. They are functionally equivalent to a cave in the game.
One rock mesh and one rock texture, drawn four times at different x,y,z scales and different locations.
I'm really pleased with the way this turned out. Once again, nothing beats a great texture. Pretty much all the textures in the game were created from photographic images.