James St. John:
Blind arch (Navajo Sandstone, Lower Jurassic; Nagunt Mesa, Kolob Canyons, Zion National Park, Utah, USA) 1
James St. John:
Blind arch (Navajo Sandstone, Lower Jurassic; Nagunt Mesa, Kolob Canyons, Zion National Park, Utah, USA) 2
James St. John:
Blind arch (Navajo Sandstone, Lower Jurassic; Nagunt Mesa, Kolob Canyons, Zion National Park, Utah, USA) 3
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 1
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 2
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 3
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 4
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 5
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 6
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 7
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 8
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 9
James St. John:
Great Arch (blind arch) developed in Navajo Sandstone (Lower Jurassic), Pine Creek Canyon, Zion National Park, sw Utah 10
James St. John:
Wingate Sandstone cliffs (with blind arches) over Chinle Fm. shales (both Upper Triassic), view from Panorama Point, Capitol Reef National Park, southern Utah 1
James St. John:
Blind arch at Slickrock Member-Dewey Bridge Member contact (Entrada Sandstone, Middle Jurassic), near Double Arch, Arches National Park, eastern Utah 1
James St. John:
Blind arch at Slickrock Member-Dewey Bridge Member contact (Entrada Sandstone, Middle Jurassic), near Double Arch, Arches National Park, eastern Utah 2
James St. John:
Blind arch in basal Slickrock Member, Entrada Sandstone (Middle Jurassic), just north of North Window Arch, Windows Section, Arches National Park, eastern Utah 1
James St. John:
Blind arch in basal Slickrock Member, Entrada Sandstone (Middle Jurassic), just north of North Window Arch, Windows Section, Arches National Park, eastern Utah 2
James St. John:
Blind arch in basal Slickrock Member, Entrada Sandstone (Middle Jurassic), just north of North Window Arch, Windows Section, Arches National Park, eastern Utah 3
James St. John:
Blind arch in basal Slickrock Member, Entrada Sandstone (Middle Jurassic), just north of North Window Arch, Windows Section, Arches National Park, eastern Utah 4
James St. John:
Blind arch in Slickrock Member of the Entrada Sandstone (Middle Jurassic), Arches National Park, eastern Utah 1
James St. John:
Blind arch in Slickrock Member of the Entrada Sandstone (Middle Jurassic), Arches National Park, eastern Utah 2
James St. John:
Blind arches at Slickrock Member-Dewey Bridge Member contact (Entrada Sandstone, Middle Jurassic), near Balanced Rock, Arches National Park, eastern Utah 1
James St. John:
Blind arches at Slickrock Member-Dewey Bridge Member contact (Entrada Sandstone, Middle Jurassic), near Double Arch, Arches National Park, eastern Utah 1
James St. John:
Royal Arches (Yosemite Valley, Sierra Nevada Mountains, California, USA) 1
James St. John:
Royal Arches (Yosemite Valley, Sierra Nevada Mountains, California, USA) 2
James St. John:
North Dome & Royal Arches (Yosemite Valley, Sierra Nevada Mountains, California, USA) 1
James St. John:
North Dome & Royal Arches (Yosemite Valley, Sierra Nevada Mountains, California, USA) 2
James St. John:
North Dome & Royal Arches (Yosemite Valley, Sierra Nevada Mountains, California, USA) 3
James St. John:
North Dome & Royal Arches (Yosemite Valley, Sierra Nevada Mountains, California, USA) 4
