 Boot Rock from Boot Spring Trail. Big Bend National Park, November 28, 2009
 Boot Rock, view from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Boot Rock from Boot Spring Trail at sunrise. Big Bend National Park, November 28, 2009
 View of Boot Rock from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Boot Spring Trail. Big Bend National Park, November 26, 2009
 Slopes of Chisos Mountains from Boot Spring Trail. Big Bend National Park, November 26, 2009
 Slopes of Chisos Mountains east from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Upper part of Boot Canyon Trail. Big Bend National Park, November 27, 2009
 Upper section of Boot Canyon Trail. Big Bend National Park, November 27, 2009
 Boot Canyon Trail ending at Southeast Rim. Big Bend National Park, November 27, 2009
 Bee Mountain, view to the west from Smokey Creek Trail near Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Upper part of Boot Canyon. Big Bend National Park, November 27, 2009
 Fall colors of Boot Canyon. Big Bend National Park, November 27, 2009
 Goat Mountain, view to the north from Smokey Creek Trail near Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Trap Mountain(?) west from Smokey Creek Trail near Trap Spring east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Cliffs of South Rim. Big Bend National Park, November 28, 2009
 Elephant tusk Mountain from Southeast Rim. Big Bend National Park, November 28, 2009
 Elephant Tusk Mountain from South Rim at sunrise. Big Bend National Park, November 29, 2009
 Boot Rock, view from Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 Smokey Creek Trail east from Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 Crown Mountain, view from lower part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Elephant Tusk Rock, view from Fresno Spring near Dodson Trail. Big Bend National Park, Texas, November 24, 2007
 Pitaya(?) cactus on Smokey Creek Trail east from Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 Santa Elena Canyon west from Smokey Creek Trail east from Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Smokey Creek Trail near Trap Spring east from Mule Ear Overlook, view to the west. Big Bend National Park, Texas, November 25, 2007
 Fresno Spring at evening. Big Bend National Park, Texas, November 23, 2007
 Purple-tinged prickly pear cactus on Smokey Creek Trail near Trap Spring east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Maiden ferns at Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Emory Peak Trail in fog. Big Bend National Park, November 27, 2009
 Camping on a small ridge near Juniper Canyon Trail south from Upper Juniper Spring. Big Bend National Park, Texas, November 22, 2007
 Century plant and Elephant Tusk Mountain, view from South Rim. Big Bend National Park, Texas, November 22, 2007
 Switchbacks of Blue Creek Trail. Big Bend National Park, November 29, 2009
 Prickly pears cactus on a small ridge near Juniper Canyon Trail south from Upper Juniper Spring. Big Bend National Park, Texas, November 22, 2007
 Slopes of Chisos Mountains from Pinnacles Trail. Big Bend National Park, November 26, 2009
 Area of red rocks on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Fall colors of Chisos Mountains from Pinnacles Trail. Big Bend National Park, November 26, 2009
 Emory Peak from lower section of Southwest Rim Trail. Big Bend National Park, November 28, 2009
 Fruit of cholla cactus (cylindropuntia) on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Century plant which bloomed, died, and tipped over, on Pinnacles Trail. Big Bend National Park, November 26, 2009
 Group of people with Dallas Sierra Club on Pinnacles Trail. Big Bend National Park, November 26, 2009
 One of eroded pinnacles of pink volcanic tuff on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Fruits of Texas madrone (Arbutus xalapensis) on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Echinocactus horizonthalonius (devil s head cactus, or horse crippler) with daggerlike spines on a small ridge near Juniper Canyon Trail south from Upper Juniper Spring. Big Bend National Park, Texas, November 22, 2007
 Southeast Rim in fog. Big Bend National Park, November 27, 2009
 Eroded pinnacles of pink volcanic tuff looking like a miniature Bryce Canyon on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Dry tree on South Rim. Big Bend National Park, November 28, 2009
 Agaves on South Rim. Big Bend National Park, November 28, 2009
 Dry juniper on South Rim. Big Bend National Park, November 28, 2009
 Casa Grande Peak of Chisos Mountains from Emory Peak Trail. Big Bend National Park, November 27, 2009
 Agaves on South Rim at sunrise. Big Bend National Park, November 29, 2009
 Pine tree on South Rim. Big Bend National Park, November 28, 2009
 Sunset from SW3 (Southwest Rim) campsite. Big Bend National Park, November 28, 2009
 Cacti and agaves on South Rim. Big Bend National Park, November 28, 2009
 Crooked pine on South Rim at morning. Big Bend National Park, November 29, 2009
 Dry juniper tree on South Rim at morning. Big Bend National Park, November 29, 2009
 Crooked pine growing on South Rim. Big Bend National Park, November 28, 2009
 East summit of Emory Peak in fog. Big Bend National Park, November 27, 2009
 El Capitan Mountain Trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 Most photographed spot with a pine tree on South Rim. Big Bend National Park, November 28, 2009
 Rocks and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 Gorman Falls (view from a trail) in Colorado Bend State Park. Bend, Texas, May 23, 2009
 Group of people with Dallas Sierra Club on Southeast Rim. Big Bend National Park, November 27, 2009
 Split rock and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 Sandy washes of Blue Creek Canyon near Homer Wilson Ranch. Big Bend National Park, November 29, 2009
 Santa Elena Canyon and mountains in Mexico from SW3 (Southwest Rim) campsite at sunrise. Big Bend National Park, November 29, 2009
 Group of peole with Dallas Sierra Club watching sunset from SW3 (Southwest Rim) campsite. Big Bend National Park, November 28, 2009
 Drooping juniper (Juniperus flaccida Var. flaccida) on Southeast Rim. Big Bend National Park, November 28, 2009
 East summit of Emory Peak, with north summit visible in fog. Big Bend National Park, November 27, 2009
 El Capitan Mountain from a trail at the foot of the mountain. Guadalupe Mountains National Park, Texas, December 27, 2007
 Cliffs near a quarry in Ruskeala Mountain Park. Karelia, Russia, September 19, 2015
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