Pinnacle Rock
David Hosking
Pinnacle Rock #1
David Hosking
Pinnacle Rock #2
David Hosking
Trona Pinnacles, California
Stuart Wilson
Oregon Rhyolite Formation
William H. Mullins
Bartolome Island
M. Watson
Red Sandstone, Canyon De Chelly
Adam Sylvester
Torres Del Paine National Park, Chile
John Shaw
Torres Del Paine National Park, Chile #2
John Shaw
Bryce Canyon National Park
James Steinberg
San Juan River From Muley Point
Ellen Thane
San Juan River From Muley Point #1
Ellen Thane
Kicker Rock Towers
John Shaw
Spider Rock Towers, Arizona
Mark Newman
Towers Of The Virgin, Zion National
Rafael Macia
Pemaquid Point Lighthouse #1
Ted Kinsman
Monument Valley
Adam G. Sylvester
Yaquina Head Lighthouse #3
Bruce Roberts
Yaquina Head Lighthouse #4
Bruce Roberts
Fisher Towers, Utah
George Ranalli
Devils Tower
James Steinberg
The Devils Tower National Monument
Rafael Macia
Devils Tower, 1890
Science Source
Tufa Towers At Mono Lake
James Steinberg
Devils Tower, Wyoming
ER Degginger
Devils Tower, 1887
Science Source
Courthouse Towers, Arches Np
David Hosking
Chimney Rock #1
John Shaw
Devils Tower & Moon
Mark Newman
Balanced Rock
David Davis
Spider Rock, Canyon De Chelly
George Ranalli
Spider Rock
Theodore Clutter
Courthouse Towers, Arches National
Rafael Macia
Courthouse Towers, Arches National #1
Rafael Macia
Karst Tower In Thailand
Fletcher & Baylis
Yosemite National Park #3
George Ranalli
Eroded Red Sandstone, Utah
Charlie Ott
The Three Gossips, Arches National Park
David Hosking
Hoodoos In Grand Staircase, Utah
Mark Newman
Devils Garden, Utah
Mark Newman
Tufa Formations, Mono Lake, Ca #1
John Shaw
Tufa Formations, Mono Lake, Ca #2
John Shaw
Silhouetted Tufa Formations, Mono Lake
John Shaw
Silhouetted Tufa Formations, Mono Lake #1
John Shaw
Wahweap Hoodoos, Utah
Mark Newman
Devils Garden, Utah
David Davis
Rainbow Over Mono Lake
Dennis Flaherty
Grand Parade, Kodachrome Basin, Utah
George Ranalli
Valley Of Fire, Nevada
James Steinberg
Kodachrome Basin, Utah
James Steinberg
Grandview Point, Grand Canyon, Arizona
James Steinberg
Pemaquid Point Lighthouse
Ted Kinsman
Beavertail Lighthouse
Bruce Roberts
Beavertail Lighthouse #1
Bruce Roberts
Spring Point Ledge Lighthouse
Bruce Roberts
Sandstone Erosion
Theodore Clutter
Cathedral Gorge State Park
Theodore Clutter
Cathedral Gorge State Park #1
Theodore Clutter
Sandstone Erosion #1
Theodore Clutter
Cathedral Gorge State Park #2
Theodore Clutter
Sandstone Spires
Theodore Clutter
Sandstone Erosion #2
Theodore Clutter
Thors Hammer, Bryce Canyon
David Davis
Kings Canyon
George Ranalli
Kodachrome Basin, Utah
George Ranalli
Cliff Palace, Mesa Verde
David Roberts / Nature's Images
Cliff Palace, Mesa Verde #1
David Roberts / Nature's Images
Sunset Point, Bryce Canyon
David Weintraub
Geyser Remnant, Kodachrome Basin, Utah #1
James Steinberg