Twilight wedge (w-231-06)

In gallery: Photos of the month (2000)
Related photos: Atmospheric optics Twilight phenomena Twilight wedge

The twilight wedge (the shadow of the earth) quickly sinks to the western horizon, a few minutes before sunrise sets Arches National Park on fire. Taken early October 2000, in Arches National Park, Utah.

Fuji Superia Reala 100 film, exp. 1/4 seconds at f/8 with 50mm lens.