This Rock and Boulder set comes as a Zip file that includes a 3D Studio Max file (Version 5.1) and 18 detailed Texture Maps. The Max File is the one used to create the sample image (minus the sky). The idea is that you just grab the rocks you like and place them in your scene as needed. The rock models have the complete stack preserved so you can adjust the rocks to your liking. The Texture Maps include the Color (diffuse) Maps as well as Bump Maps. These rock textures are fully tileable and are at high resolution. The Shader Library can be found within this Max file. It has 9 rock variations with color, bump, and displacement. The rock shaders and textures are also great for rocky environments and land. If you need rocks, this set is for you!