In mid February 2001, after the Tucson Gemstone and Mineral Show, my partner and I drove from Tucson, Arizona to Southern California. We had approximately 1000 Crystal and Gemstone Skulls in the van with us, along with plenty of other stones, crystals, tektites, etc.
I was enjoying the scenery, snapping photos with my digital camera while my partner drove. At one point, in SW Arizona, I thought that the clouds looked rather unusual and that is when I snapped the photo below.
I did not see the disc shape in the clouds when I took the photo, however there was something peculiar about the clouds that drew my attention to them. (Unfortunately, I'm not sure what it was!).
The shape in the photo did not appear in any of the other photos I took along the trip, nor can I explain it by saying it resembles anything on the van that may have somehow been reflecting into the photo