Tim Fitzharris / Plains Pricklypear (Opuntia polyacantha), Arches National Park, Utah

Gerry Ellis / Delicate Arch, Arches National Park, Utah

Gerry Ellis / Upward view of Delicate Arch, Arches National Park, Utah

Tim Fitzharris / Turret arch through north window arch, Arches National Park, Utah

Tim Fitzharris / Mat Martin Point and the Colorado River, Arches National Park, Utah

Tim Fitzharris / Mat Martin Point and the Colorado River, Arches National Park, Utah

Jeff Foott / Whipple's Fishhook Cactus (Sclerocactus whipplei) flowering, Arches National Park, Utah

Jeff Foott / Sandstone rock formation, Arches National Park, Utah

Jeff Foott / Sandstone rock formation in winter, La Sal Mountains, Arches National Park, Utah

Jeff Foott / Sandstone rock formation in winter, La Sal Mountains, Arches National Park, Utah

Tim Fitzharris / Utah Juniper (Juniperus osteosperma) and Balanced Rock, Arches National Park, Utah

Tim Fitzharris / Moon over Balanced Rock, Arches National Park, Utah

Tim Fitzharris / La Sal Mountains and Balanced Rock, Arches National Park, Utah

Tim Fitzharris / Globemallow (Sphaeralcea sp) clusters and dirt road, Salt Valley, Arches National Park, Utah

Tim Fitzharris / Globemallow (Sphaeralcea sp) cluster and La Sal Mountains, Salt Valley, Arches National Park, Utah

Tim Fitzharris / Globemallow (Sphaeralcea sp) cluster and La Sal Mountains, Salt Valley, Arches National Park, Utah

Tim Fitzharris / Panoramic view of Salt Valley, Arches National Park, Utah

Gerry Ellis / Hunting party petroglyphs at Wolfe Ranch, Arches National Park, Utah

Gerry Ellis / Hunting party petroglyphs at Wolfe Ranch, Arches National Park, Utah

Tim Fitzharris / Delicate Arch in Arches National Park, Utah

Tim Fitzharris / Balanced rock under cloudy skies, Arches National Park, Utah

Ingo Arndt / Turret Arch as seen through the North Window Arch at sunrise, Arches National Park, Utah

Yva Momatiuk & John Eastcott / Road through red sandstone rocks at sunset, Arches National Park, Utah

Jeff Foott / Sandstone formations after winter storm, Arches national Park, Utah

Jeff Foott / Rock formation and full moon, Balanced Rock, Arches National Park, Utah

Jeff Foott / Rock formation and full moon, Balanced Rock, Arches National Park, Utah

Jeff Foott / Sign indicating rock formation, Balanced Rock, Arches National Park, Utah

Jeff Foott / Mule-ears (Wyethia amplexicaulis) flowering near rock formation, The Organ, Arches National Park, Utah