Photo of the Day 14 June 2008

Sandstone Pillars, Sahara Desert, Chad, 1999
Photograph by George Steinmetz

Spires of eroded sandstone stand like ancient pillars in the red dunes of Chad's Karnasai Valley in the central Sahara desert. Fierce winds, punishing sandstorms, and occasional douses of rain are slowly turning these rock formations back into the sand from which they were made.