Cloudscape Sunrise

I shot this a while ago and never posted it. This is from Roanoke mountain summit. I am able to stop here on my way to and from work. I stopped in this particular morning because I could tell there was ground fog and it was partly cloudy while I was driving. I thought conditions were favorable, so I drove up the mountain. Waves of clouds with mountains poking through below and a sunrise on top. I made 4 shots with variations in composition, centering the sun, etc, and then split for work. 

Sigma DP1 Merrill, 19mm, ISO 100, 1/200 Second, f8. Raw converted to TIF in Sigma Photo Pro then LRCC. I think I used a 2 stop GND filter. Tripod, Timed shutter release. Basic editing to make it look and feel like I experienced it.

All comments welcome.