 South Rim, view from Fresno Circle campsite near Dodson 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
 Fresno Spring at evening. Big Bend National Park, Texas, November 23, 2007
 Cacti on east part of Dodson 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
 Ruins of Dodson Ranch. Big Bend National Park, Texas, November 23, 2007
 Cane Cholla cactus and Southeast Rim, view from east part of Dodson Trail. Big Bend National Park, Texas, November 23, 2007
 Sunset from SW3 (Southwest Rim) campsite. Big Bend National Park, November 28, 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
 Agave on Smokey Creek Trail. Big Bend National Park, Texas, November 24, 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
 Weathered wood on Pinnacles Trail near Juniper Flat. Big Bend National Park, Texas, November 22, 2007
 Boot Rock, view from Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Lower (flat) part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Smokey Creek Trail east from Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Smokey Creek Trail north from Mule Ear Peaks. Big Bend National Park, Texas, November 25, 2007
 Northeast Rim, view from lower part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Dallas Sierra Club on Smokey Creek Trail at rain. Big Bend National Park, Texas, November 24, 2007
 Ocotillo on Smokey Creek Trail north from Mule Ear Peaks. 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
 Desert mistletoe(?) growing on ocotillo, view from Smokey Creek Trail. 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
 Smokey Creek Trail through creosote bushes and cacti east from Mule Ear Overlook. 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
 Valley of Smokey Creek, view to the east from a trail north from Mule Ear Peaks. 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
 Santa Elena Canyon west from Smokey Creek Trail east from Mule Ear Spring. 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
 - 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)
 Some brittlestem (Psathyrella) mushrooms near a primitive campsite a sharp bend of the creek near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
 Underside of some brittlestem (Psathyrella) mushrooms near a primitive campsite a sharp bend of the creek near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
 Small greyling mushrooms Tephrocybe anthracophila on old bonfire site on a primitive campsite a sharp bend of the creek near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
 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
 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
 Cactus on rocks of Smokey Creek. 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
 Chisos Mountains with snow, view from Castalon Highway. Big Bend National Park, Texas, November 25, 2007
 Century plant and Elephant Tusk Mountain, view from South Rim. Big Bend National Park, Texas, November 22, 2007
 Mule Ear Peaks east from Smokey Creek Trail east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 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
 Chisos Mountains with traces of snow, view from Castalon Highway (Ross Maxwell Scenic Drive). Big Bend National Park, Texas, November 25, 2007
 - 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)
 - 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)
 - 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)
 - 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)
 A statue at Columbus Circle at south-west gate of Central Park. New York City, February 25, 2007
 Emory Peak Trail in fog. Big Bend National Park, November 27, 2009
 Boot Spring Trail. Big Bend National Park, November 26, 2009
 Switchbacks of Blue Creek Trail. Big Bend National Park, November 29, 2009
 Cypress roots near Trammel Crossing at evening in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Upper section of Boot Canyon Trail. Big Bend National Park, November 27, 2009
 Upper part 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
 Area of red rocks on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Slopes 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
 Slopes of Chisos Mountains from Boot Spring Trail. Big Bend National Park, November 26, 2009
 Fall colors of Chisos Mountains from Pinnacles Trail. Big Bend National Park, November 26, 2009
 Cliffs of Toll Mountain from Boot Spring 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
 Century plant which bloomed, died, and tipped over, on Pinnacles Trail. Big Bend National Park, November 26, 2009
 Slopes of Chisos Mountains east from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Fruit of cholla cactus (cylindropuntia) 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
 One of eroded pinnacles of pink volcanic tuff on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Eroded pinnacles of pink volcanic tuff looking like a miniature Bryce Canyon on Blue Creek Trail. Big Bend National Park, November 29, 2009
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