Alan Cressler:
Brushy Basin Member of the Morrison Formation, Late Jurassic Period, Salt Valley Wash Area, Arches National Park, Grand County, Utah 1
Alan Cressler:
Brushy Basin Member of the Morrison Formation, Late Jurassic Period, Salt Valley Wash Area, Arches National Park, Grand County, Utah 2
Alan Cressler:
Partition Arch, Devils Garden, Arches National Park, Grand County, Utah 1
Alan Cressler:
Landscape Arch, Devils Garden, Arches National Park, Grand County, Utah 4
Alan Cressler:
Landscape Arch, Devils Garden, Arches National Park, Grand County, Utah 3
Alan Cressler:
Landscape Arch, Devils Garden, Arches National Park, Grand County, Utah 1
Alan Cressler:
Datura wrightii, Devils Garden, Arches National Park, Grand County, Utah 1
Alan Cressler:
Delicate Arch, Arches National Park, Grand County, Utah 6
Alan Cressler:
Delicate Arch, Arches National Park, Grand County, Utah 7
Alan Cressler:
Delicate Arch, Arches National Park, Grand County, Utah 4
Alan Cressler:
Delicate Arch, Arches National Park, Grand County, Utah 1
Alan Cressler:
Double O Arch, Devils Garden, Arches National Park, Grand County, Utah 1
Alan Cressler:
Devils Garden, Arches National Park, Grand County, Utah 3
Alan Cressler:
Devils Garden, Arches National Park, Grand County, Utah 2
Alan Cressler:
Devils Garden, Arches National Park, Grand County, Utah 1
Alan Cressler:
Delicate Arch area, Arches National Park, Grand County, Utah 1
Alan Cressler:
Wolfe Ranch Petroglyphs, panel No. 1, Arches National Park, Grand County, Utah 2
Alan Cressler:
Wolfe Ranch Petroglyphs, panel No. 1, Arches National Park, Grand County, Utah 1
Alan Cressler:
Wolfe Ranch Petroglyph, panel No. 2, Arches National Park, Grand County, Utah 1