 Elephant Tusk Rock, view from Fresno Spring near Dodson Trail. Big Bend National Park, Texas, November 24, 2007
 Fresno Circle campsite near Dodson Trail at evening. Big Bend National Park, Texas, November 23, 2007
 South Rim, view from Fresno Circle campsite near Dodson Trail. Big Bend National Park, Texas, November 23, 2007
 Maiden ferns at Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Smokey Creek Trail east from Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Pitaya(?) cactus on Smokey Creek Trail east from Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Bee Mountain, view to the west from Smokey Creek Trail near Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Goat Mountain, view to the north from Smokey Creek Trail near Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 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
 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
 Camping on a small ridge near Juniper Canyon Trail south from Upper Juniper Spring. Big Bend National Park, Texas, November 22, 2007
 Trap Mountain(?) west from Smokey Creek Trail near Trap Spring east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Prickly pears cactus on a small ridge near Juniper Canyon Trail south from Upper Juniper Spring. Big Bend National Park, Texas, November 22, 2007
 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
 Boot Spring Trail. Big Bend National Park, November 26, 2009
 Cliffs of Toll Mountain from 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
 - South East Rim, evening (A trip to Big Bend Park, November 28, 1997, day and evening)
 - South East Rim, evening (A trip to Big Bend Park, November 28, 1997, day and evening)
 - South East Rim, evening (A trip to Big Bend Park, November 28, 1997, day and evening)
 - South East Rim, evening (A trip to Big Bend Park, November 28, 1997, day and evening)
 Slopes of Chisos Mountains east from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Ruins of Dodson Ranch. Big Bend National Park, Texas, November 23, 2007
 Pour-off of Smokey Creek. Big Bend National Park, Texas, November 25, 2007
 Canyon of Smokey Creek. Big Bend National Park, Texas, November 25, 2007
 Cactus on rocks of Smokey Creek. Big Bend National Park, Texas, November 25, 2007
 Agave on Smokey Creek Trail. Big Bend National Park, Texas, November 24, 2007
 Cacti on east part of Dodson Trail. Big Bend National Park, Texas, November 23, 2007
 Mule Ear Peaks from Smokey Creek Trail. Big Bend National Park, Texas, November 25, 2007
 Lower part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 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
 Lower (flat) part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Chisos Mountains with snow, view from Castalon Highway. Big Bend National Park, Texas, November 25, 2007
 Smokey Creek Trail north from Mule Ear Peaks. Big Bend National Park, Texas, November 25, 2007
 Boot Rock, view from Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Weathered wood on Pinnacles Trail near Juniper Flat. Big Bend National Park, Texas, November 22, 2007
 Ocotillo on Smokey Creek Trail north from Mule Ear Peaks. Big Bend National Park, Texas, November 25, 2007
 Dallas Sierra Club on Smokey Creek Trail at rain. Big Bend National Park, Texas, November 24, 2007
 Northeast Rim, view from lower part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Sotol and Southeast Rim, view from east part of Dodson Trail. Big Bend National Park, Texas, November 23, 2007
 Century plant and Elephant Tusk Mountain, view from South Rim. Big Bend National Park, Texas, November 22, 2007
 Desert mistletoe(?) growing on ocotillo, view from Smokey Creek Trail. Big Bend National Park, Texas, November 25, 2007
 Crown Mountain, view from lower part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Valley of Smokey Creek, view to the east from a trail north from Mule Ear Peaks. Big Bend National Park, Texas, November 25, 2007
 Cane Cholla cactus and Southeast Rim, view from east part of Dodson Trail. Big Bend National Park, Texas, November 23, 2007
 Smokey Creek Trail through creosote bushes and cacti east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Purple-tinged prickly pear cactus in the middle part of Smokey Creek Trail. Big Bend National Park, Texas, November 25, 2007
 Chisos Mountains with traces of snow, view from Castalon Highway (Ross Maxwell Scenic Drive). 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)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 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)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 - 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)
 Mule Ear Peaks east from Smokey Creek Trail east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Cypress roots near Trammel Crossing at evening in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Rocks in Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Big rocks near Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Rocks on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Hiker s staircase in Pine Spring Canyon, on Devils Hall Trail. Guadalupe Mountains National Park, Texas, December 28, 2007
 Dead juniper on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Upper section of Hiker s Staircase near Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Guadalupe spring from El Capitan Trail. 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
 El Capitan Mountain Trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 Rocks and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 Split rock and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 Peeling bark of Texas madrone on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Texas madrone (Arbutus xalapensis) on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Smooth white bark of Texas madrone on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
 Southeast Rim in fog. Big Bend National Park, November 27, 2009
 Dry tree on South Rim. Big Bend National Park, November 28, 2009
 Cliffs of South Rim. Big Bend National Park, November 28, 2009
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