 Slopes of Chisos Mountains from Pinnacles 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
 Casa Grande Peak of Chisos Mountains from Emory Peak Trail. Big Bend National Park, November 27, 2009
 Chisos Mountains with snow, view from Castalon Highway. Big Bend National Park, Texas, November 25, 2007
 Fall colors of Boot Canyon. Big Bend National Park, November 27, 2009
 Chisos Mountains with traces of snow, view from Castalon Highway (Ross Maxwell Scenic Drive). Big Bend National Park, Texas, November 25, 2007
 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
 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
 Weathered wood on Pinnacles Trail near Juniper Flat. Big Bend National Park, Texas, November 22, 2007
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 Santa Elena Canyon and mountains in Mexico from SW3 (Southwest Rim) campsite at sunrise. Big Bend National Park, November 29, 2009
 - Pinnacles trail - Mandrone (mandrono) (A trip to Big Bend Park, November 27, 1997, morning and day)
 Fall colors of Sam Houston National Forest, on Little Lake Creek Loop Trail. Texas, November 1, 2008
 Emory Peak Trail in fog. Big Bend National Park, November 27, 2009
 Boot Spring Trail. Big Bend National Park, November 26, 2009
 Fall colors of a bend of Lower Lamskiy Pond in Alexander Park. Pushkin (former Tsarskoe Selo), south from Saint Petersburg, Russia, September 24, 2015
 Switchbacks of Blue Creek Trail. Big Bend National Park, November 29, 2009
 Fall colors at a trail junction in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors around a trail junction in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 23, 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
 Area of red rocks on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Cliffs of Toll Mountain from Boot Spring Trail. Big Bend National Park, November 26, 2009
 Emory Peak from lower section of Southwest Rim Trail. Big Bend National Park, November 28, 2009
 Fall colors of Enfield gorge, view from Rim Trail, in Robert H. Treman State Park. Ithaca, New York, November 2, 2005
 Fruit of cholla cactus (cylindropuntia) on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Fall colors of beautyberry on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, November 20, 2021
 Fall colors of sweetgum leaves near Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, November 24, 2021
 Fall colors of poison ivy on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 8, 2019
 Fall colors of Enfield gorge, zoomed, view from Rim Trail, in Robert H. Treman State Park. Ithaca, New York, November 2, 2005
 Fall colors of sumac and sweetgum in a pine forest on Richards Loop Trail in Sam Houston National Forest. Texas, November 28, 2023
 Fruits of Texas madrone (Arbutus xalapensis) on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Fall colors of trumpet vine and sweetgum in a pine forest on Richards Loop Trail in Sam Houston National Forest. Texas, November 28, 2023
 Fall colors of area near the creek on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 8, 2019
 Southeast Rim in fog. Big Bend National Park, November 27, 2009
 Boot Rock from Boot Spring Trail. Big Bend National Park, November 28, 2009
 Fall colors of a bend at a channel from Beloe Lake to Serebrianoe Lake in Gatchina, a suburb of Saint Petersburg. Russia, September 27, 2015
 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 Rock, view from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Cliffs of South Rim. Big Bend National Park, November 28, 2009
 Dry tree on South Rim. Big Bend National Park, November 28, 2009
 Dry juniper on South Rim. Big Bend National Park, November 28, 2009
 Agaves on South Rim. Big Bend National Park, November 28, 2009
 Fall colors at Lake Raven in Huntsville State Park. Texas, November 15, 2019
 Fall colors in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors of Donahue Trail in Freetown/Fall River State Forest. Massachusetts, October 24, 2004
 Cacti and agaves on South Rim. Big Bend National Park, November 28, 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
 Fall colors of cypress trees in Central Park. College Station, Texas, November 20, 2010
 Fall colors near a lamppost in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors near a bridge in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors of poison ivy in Lick Creek Park. College Station, Texas, November 10, 2020
 East summit of Emory Peak in fog. Big Bend National Park, November 27, 2009
 Dry juniper tree on South Rim at morning. Big Bend National Park, November 29, 2009
 Crooked pine on South Rim at morning. Big Bend National Park, November 29, 2009
 Upper part of Boot Canyon. Big Bend National Park, November 27, 2009
 Elephant tusk Mountain from Southeast Rim. Big Bend National Park, November 28, 2009
 Crooked pine growing on South Rim. Big Bend National Park, November 28, 2009
 Fall colors of Virginia creeper in Lick Creek Park. College Station, Texas, November 10, 2020
 Fall colors of black locust(?) in Lick Creek Park. College Station, Texas, November 10, 2020
 Fall colors of Alligator Branch of Lake Raven in Huntsville State Park. Texas, November 23, 2012
 Elephant Tusk Mountain from South Rim at sunrise. Big Bend National Park, November 29, 2009
 Most photographed spot with a pine tree on South Rim. Big Bend National Park, November 28, 2009
 Fall colors of oaks near Birch Creek Unit of Somerville Lake State Park. Texas, November 24, 2018
 Fall colors of horsenettle (Solanum carolinense) in Lick Creek Park. College Station, Texas, November 30, 2012
 Fall colors of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, November 1, 2012
 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
 Fall colors of a cypress tree in Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 Sandy washes of Blue Creek Canyon near Homer Wilson Ranch. Big Bend National Park, November 29, 2009
 Fall colors of sweetgum on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020
 Group of peole with Dallas Sierra Club watching sunset from SW3 (Southwest Rim) campsite. Big Bend National Park, November 28, 2009
 Fall colors of sweetgum on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 22, 2023
 Fall colors of swamp cypress of Research Park on campus of Texas A and M University. College Station, Texas, November 28, 2012
 Drooping juniper (Juniperus flaccida Var. flaccida) on Southeast Rim. Big Bend National Park, November 28, 2009
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