Tim Fitzharris / Cloud over White Sands National Park, Chihuahuan Desert, New Mexico

Yva Momatiuk & John Eastcott / Hikers among white gypsum sand dunes, White Sands National Park, New Mexico

Tim Fitzharris / Sunlight illuminating Chisos Mountains, Chihuahuan Desert, Texas

Tim Fitzharris / Organ Mountains, Chihuahuan Desert, New Mexico

Tim Fitzharris / Organ Mountains, Chihuahuan Desert, New Mexico

Gerry Ellis / Fence separating an over-grazed pasture from native Chihuahuan Desert grassland, near Hatch, New Mexico

Gerry Ellis / Fence separating over-grazed pasture from native Chihuahuan Desert grassland near Hatch, New Mexico