Storm over mountains above Upper Hellhole Canyon, Anza-Borrego State Park, CA. by Charlie Wallace

Taken on 11/29/09 from the Culp Valley Overlook in Anza-Borrego Desert Park, east of San Diego in California, looking west towards the mountains. A storm was trying to surge over the mountains, leaving snow on the upper reaches. At the bottom are several upper forks of Hellhole Canyon; if you zoom in you can see cottonwood trees changing color.

This photo was stitched from 64 10mp images using Autopano Pro. It's 250 megapixels (a quarter of a gigapixel!), dimensions are 26690x9375. The photos were taken with a Sony Alpha A-100 zoomed to 200mm.