In this image I tried to create a worn-out metallic material. For the lava I put a big invisible red Vray plane light facing upwards on top of a plane with a Vray light material applied to it. VraySun and VraySky are used for the rest of the lighting. Below you can see how I made the metal.
I wanted to learn more about light that is facing the camera and thus creating strong highlights. I also wanted to learn more about Mudbox. The image below is a screenshot I took from the Mudbox viewport.
My first goal with this image was to create some realistic looking rocks, but it got a bit out of hand. :-) Below you can find a tutorial about how I made those rocks in 3ds Max. Click on the images to see a higher resolution version.