“Massive Thunderhead” by LYLE GLASS.

A massive and threatening thunderhead looms over the North Dakota Badlands, while the sun casts an erie glow on the buttes and a remuda of wild horses graze in a meadow, oblivious to the thunderhead.

Adjusted in PSE7.

Photographed in Theodore Roosevelt National Park, South Unit, Medora, North Dakota on 7-12-2010 at 8:27 p.m.