This is the first time i used maya 3d in one of my pieces (usually i use 3dsmax to make trendy crystal explosions). Since maya doesn't have a noise filter, I used maya to make the rock formations that i used in the pic below. I just use the nurb sculpting tool to make a blob of some sort and then played around with materials and bump maps to create the rocks. I didn't do the textures in maya, the vast majority was done in photoshop. I used 2 stock images, one of clouds and one of a waterfall to achieve this effect.