Glen Canyon

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; rock formations in dark shadow with smaller conical rock formation in the distance.

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; rock formations in dark shadow with smaller conical rock formation in the distance.

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; rock formations in light shadow with smaller conical rock formation in the distance.

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; part of rock formations in dark shadow with smaller conical rock formation in the distance.

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; part of rock formations in dark shadow with smaller conical rock formation in the distance. Rock formation on viewer left has shaft of light illuminating top portion of the rock face.

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; rock formations in dark shadow with smaller conical rock formation in the distance.

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; viewer right rock formation in dark shadow, two small shadows on rock face to the left, smaller conical rock formation in the distance.

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; part of the rock formations in dark shadow with smaller conical rock formation in the distance.

Close-up of two sheared vertical rock face formations creating a V-shaped cleavage; viewer right rock formation in dark shadow, two small shadows on rock face to the left, smaller conical rock formation in the distance with numerous clouds in the sky above.

Pyramid-like rock outcrop under a clear sky.

Pyramid-like rock outcrop under a clear sky.

Closeup of a section of the rockface formations along the river in Glen Canyon. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup view of rockface formations. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Image of rockface formations. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Glen Canyon, a section of the rockface formations. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup of a section of a rockface formation. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup of a section of the rockface formations. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Image of the rockface and foliage along the Colorado River. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup of a section of the rockface. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

View of a section of the rockface formations in the canyon with shadows. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Section of the rockface along the river. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup section of the rockface. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."