At the foot of the Sangre de Christo Mountains, NE of Alamosa, CO. Highest dunes are 750' tall. A very, very blustery, high degree day.
7D, 100-400mm f/4.5-5.6L. Focal lengths from 280 to 640 35mm equivalent. Three now, more later.
The ants go marching
Challenger
Apotheosis