I posted this last week and since then I felt there need to be changes made. This is version 3.
This is a single light set up, no modifiers, and was a 15 second exposure. I chose long exposure over strobe to give it a more atmosphere. Using the strobes flash there wasn't as much "bloom" from the cave entrance.
The set is at 1/6 scale, built out of foam, textured and weathered. The figure was made by Tao Heavy Industries.