The Easy Environments series for Daz Studio and Poser combines high-res (12000x6000) SkySpheres/HDRIs with terrain geometry. The terrain makes sure your character has something to stand on, while the SkySphere/HDRI provides full scene coverage and great vistas.
ExoPlanet I is a barren, alien planet. It`s rocks have been shaped by mighty storms.
The set comes with two sky/light options (normal and red). It is well suited for scifi or fantasy renders.
The file formats are native .DUF for Daz Studio 3Delight and Iray, and .PP2 for Poser.
Lighting is included for all versions (Iray through the HDR environment, 3Delight parented to the skysphere, Poser as separate preload).
You can get additional info and tips here: http://flipmode3d.com/easy-environments/