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Dr. Doc: From the Appalachian Trail, Shenandoah National Park, VA
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Dr. Doc: Sy in his "Roy Orbison mode," Tomball, Texas
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Dr. Doc: Supernova Glyphs, Penasco Blanco Trail, Chaco Culture National Historical Park, New Mexico
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Dr. Doc: Supernova Glyphs, Penasco Blanco Trail, Chaco Culture National Historical Park, New Mexico
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Dr. Doc: Supernova Glyphs, Penasco Blanco Trail, Chaco Culture National Historical Park, New Mexico
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Dr. Doc: Supernova Glyphs, Penasco Blanco Trail, Chaco Culture National Historical Park, New Mexico
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Dr. Doc: Supernova Glyphs, Penasco Blanco Trail, Chaco Culture National Historical Park, New Mexico
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Dr. Doc: Doc & Claire Gibson, Christmas, 2008, Arkansas
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Dr. Doc: Doc and Claire Gibson, Shoshone Lake, Yellowstone National Park, WY
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Dr. Doc: Daisy Geyser, Yellowstone National Park, WY
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Dr. Doc: Mount Rushmore National Memorial, Keystone, South Dakota
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Dr. Doc: Shades of Fail-Safe, Minuteman Missile Silo D-9, Minuteman Missile National Historic Site, Wall, South Dakota
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Dr. Doc: Black Pool, West Thumb Geyser Basin, Yellowstone National Park, Wyoming
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Dr. Doc: Black Pool, West Thumb Geyser Basin, Yellowstone National Park, Wyoming
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Dr. Doc: Big Cone and Little Cone, Lake Yellowstone, West Thumb Geyser Basin, Yellowstone Naitonal Park, Wyoming
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Dr. Doc: Yellowstone National Park, Wyoming, Bison Gathered around hot springs.
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Dr. Doc: Yellowstone National Park, Wyoming, Slough Creek Trail
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Dr. Doc: Yellowstone National Park, Wyoming, Slough Creek Trail
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Dr. Doc: Bierdstadt Lake, Rocky Mountain National Park, Colorado
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Dr. Doc: Moments from Coreena's Wedding, May 26, 2013, Springfield, Missouri
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Dr. Doc: Intensification of the West Fork Forest Fire Complex, San Juan National Forest, Pagosa Springs, Colorado
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Dr. Doc: Intensification of the West Fork Forest Fire Complex, San Juan National Forest, Pagosa Springs, Colorado
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Dr. Doc: Falls Creek Waterfall, Four Mile Falls Trail, Weminuche Wilderness, San Juan National Forest, Pagosa Springs, Colorado
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Dr. Doc: Falls Creek Waterfall, Four Mile Falls Trail, Weminuche Wilderness, San Juan National Forest, Pagosa Springs, Colorado
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Dr. Doc: Falls Creek Waterfall, Four Mile Falls Trail, Weminuche Wilderness, San Juan National Forest, Pagosa Springs, Colorado
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Dr. Doc: Falls Creek Waterfall, Four Mile Falls Trail, Weminuche Wilderness, San Juan National Forest, Pagosa Springs, Colorado
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Dr. Doc: Falls Creek Waterfall, Four Mile Falls Trail, Weminuche Wilderness, San Juan National Forest, Pagosa Springs, Colorado
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Dr. Doc: Slick Rock Hollow Falls, Sylamore Creek Trail, near Allison, Arkansas
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Dr. Doc: BNSF Coal Traffic, Crawford Hill, Nebraska
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Dr. Doc: Beehive Geyser, Yellowstone National Park, Wyoming