 View of Boot Rock from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Cliffs of South Rim. Big Bend National Park, November 28, 2009
 Sensitive brier (Schrankia uncinata)(?) on Prairie Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Sunset from SW3 (Southwest Rim) campsite. Big Bend National Park, November 28, 2009
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 Santa Elena Canyon and mountains in Mexico from SW3 (Southwest Rim) campsite at sunrise. Big Bend National Park, November 29, 2009
 Under Gorman Falls in Colorado Bend State Park. Bend, Texas, May 23, 2009
 Fall colors of Chisos Mountains from Pinnacles Trail. Big Bend National Park, November 26, 2009
 Slopes of Chisos Mountains from Pinnacles Trail. Big Bend National Park, November 26, 2009
 Elephant tusk Mountain from Southeast Rim. Big Bend National Park, November 28, 2009
 Century plant which bloomed, died, and tipped over, on Pinnacles Trail. Big Bend National Park, November 26, 2009
 Gorman Falls in Colorado Bend State Park. Bend, Texas, May 23, 2009
 - South Rim (A trip to Big Bend Park, November 28, 1997, day)
 - Boot Canyon trail 11/28/97 morning (A trip to Big Bend Park, November 27 - 28, 1997)
 Casa Grande Peak of Chisos Mountains from Emory Peak Trail. Big Bend National Park, November 27, 2009
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 Slopes of Chisos Mountains east from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Beebalm (Monarda punctata) on Prairie Trail in Brazos Bend State Park. Needville, Texas, September 4, 2010
 Standing yellow-crowned night-heron bird in Brazos Bend State Park. Needville, Texas, June 2, 2012
 South Rim, view from Fresno Circle campsite near Dodson Trail. Big Bend National Park, Texas, November 23, 2007
 A bend of Taughannock Creek. Ithaca, New York, October 19, 2005
 Blooming buttonbush on west side of 40 Acre Lake in Brazos Bend State Park. Needville, Texas, July 4, 2008
 - South Rim (A trip to Big Bend Park, November 28, 1997, day)
 Upper part of Boot Canyon. Big Bend National Park, November 27, 2009
 Crooked pine on South Rim at morning. Big Bend National Park, November 29, 2009
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 Herbertia (Prairie nymph) on Horseshoe Lake Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Picnic place on north shore of Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Mossy travertine formations at the base of Gorman Falls in Colorado Bend State Park. Bend, Texas, May 23, 2009
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 Gorman Falls (view from a trail) in Colorado Bend State Park. Bend, Texas, May 23, 2009
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 Spicewood Springs in Colorado Bend State Park. Bend, Texas, May 23, 2009
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 Boot Spring Trail. Big Bend National Park, November 26, 2009
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 Overlook of a bend of Pilant Slough in Brazos Bend State Park. Needville, Texas, December 14, 2008
 Emory Peak Trail in fog. Big Bend National Park, November 27, 2009
 Drooping juniper (Juniperus flaccida Var. flaccida) on Southeast Rim. Big Bend National Park, November 28, 2009
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 Smol nyi Cathedral and monastery at a bend of Neva River in Saint Petersburg, Russia, April 21, 1999.
 Sida rhombifolia (Arrowleaf Sida) flower on west side of 40 Acre Lake in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Eroded pinnacles of pink volcanic tuff looking like a miniature Bryce Canyon on Blue Creek Trail. Big Bend National Park, November 29, 2009
 - South Rim (A trip to Big Bend Park, November 28, 1997, day)
 Meadow pink (Sabatia campestris) flower on Prairie Trail in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Heron like bird on west side of Elm Lake(?) in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Area of red rocks on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Chisos Mountains with snow, view from Castalon Highway. Big Bend National Park, Texas, November 25, 2007
 Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 View of Big Creek from Big Creek Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Southeast Rim in fog. Big Bend National Park, November 27, 2009
 Agaves on South Rim. Big Bend National Park, November 28, 2009
 Pine tree on South Rim. Big Bend National Park, November 28, 2009
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 Chisos Mountains with traces of snow, view from Castalon Highway (Ross Maxwell Scenic Drive). Big Bend National Park, Texas, November 25, 2007
 Cormorant drying wings on east side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Dry juniper on South Rim. Big Bend National Park, November 28, 2009
 - South East Rim, evening (A trip to Big Bend Park, November 28, 1997, day and evening)
 Alligator on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Wading great white egret (Ardea alba) from Spillway Trail in Brazos Bend State Park. Needville, Texas, December 14, 2008
 Alligator with parasite worms on west shore of Elm Lake in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Boot Rock, view from Boot Spring Trail. Big Bend National Park, November 27, 2009
 Most photographed spot with a pine tree on South Rim. Big Bend National Park, November 28, 2009
 One of eroded pinnacles of pink volcanic tuff on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Yellow-crowned night-heron bird eating a shrimp in Brazos Bend State Park. Needville, Texas, June 2, 2012
 Mistflower (Eupatorium coelestinum) on Prairie Trail in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Cacti and agaves on South Rim. Big Bend National Park, November 28, 2009
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 Winecup flower on Prairie Trail in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Yellow-crowned night-heron marsh bird on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Cliffs of Toll Mountain from Boot Spring Trail. Big Bend National Park, November 26, 2009
 Spillway Trail in Brazos Bend State Park. Needville, Texas, September 4, 2010
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 Great blue heron near Pilant Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Alligator near 40 Acre Lake in Brazos Bend State Park. Needville, Texas, April 24, 2010
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 Century plant and Elephant Tusk Mountain, view from South Rim. Big Bend National Park, Texas, November 22, 2007
 Purple loosestrife (Lythrum salicaria)(?) on Prairie Trail in Brazos Bend State Park. Needville, Texas, July 4, 2008
 East summit of Emory Peak, with north summit visible in fog. Big Bend National Park, November 27, 2009
 Bend of Bird Market in Souq Jaidah behind Souq Waqif. Doha, Qatar, October 14, 2015
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 Alligator hiding in duckweed on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Crooked pine growing on South Rim. Big Bend National Park, November 28, 2009
 Alligator with open mouth near 40 Acre Lake in Brazos Bend State Park. Needville, Texas, April 24, 2010
 Alligator watching tourists on west shore of Elm Lake in Brazos Bend State Park. Needville, Texas, April 24, 2010
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 - South Rim 11/30/97 morning (A trip to Big Bend Park, November 29 - 30, 1997)
 Golden silk spider (Nephila clavipes) eating a dragonfly on Spillway Trail in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Pink flowers of pea family on Prairie Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Elephant Tusk Mountain from South Rim at sunrise. Big Bend National Park, November 29, 2009
 - 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)
 - South East Rim, evening (A trip to Big Bend Park, November 28, 1997, day and evening)
 Trap Mountain(?) west from Smokey Creek Trail near Trap Spring east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 American basket flower (Centaurea americana) on Prairie Trail in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Agaves on South Rim at sunrise. Big Bend National Park, November 29, 2009
 Spanish moss near Horseshoe Lake in Brazos Bend State Park. Needville, Texas, September 4, 2010
 Purple loosestrife (Lythrum salicaria)(?) on Prairie Trail in Brazos Bend State Park. Needville, Texas, June 2, 2012
 Small white flowers of Texas Pinkroot (Spigelia texana) in Brazos Bend State Park. Needville, Texas, June 2, 2012
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 - Blue Creek Canyon (A trip to Big Bend Park, November 29 - 30, 1997)
 Northeast Rim, view from lower part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Fresno Spring at evening. Big Bend National Park, Texas, November 23, 2007
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 Alligator resting on a log in Pilant Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Turtle on a log covered by green duckweed on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, December 14, 2008
 - South Rim (A trip to Big Bend Park, November 28, 1997, day)
 Mule Ear Peaks east from Smokey Creek Trail east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Alligator with open mouth on west shore of New Horseshoe Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Close-up of an alligator head floating in duckweed on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Self-Heal (Carpenter-weed, Prunella vulgaris) on Big Creek Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Emory Peak from lower section of Southwest Rim Trail. Big Bend National Park, November 28, 2009
 Families taking pictures of children with an alligator on Spillway Trail in Brazos Bend State Park. Needville, Texas, April 24, 2010
 Yellow-crowned night-heron bird with a shrimp in Brazos Bend State Park. Needville, Texas, June 2, 2012
 Back lit water hyacinth (Eichhornia crassipes) in Elm Lake in Brazos Bend State Park. Needville, Texas, June 2, 2012
 American coot(?) birds on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Head of alligator in duckweed on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Spillway Trail in Brazos Bend State Park, with a bridge across Pilant Lake spillway and observation tower in background. Needville, Texas, December 14, 2008
 Boot Rock from Boot Spring Trail at sunrise. Big Bend National Park, November 28, 2009
 "Giant anakonda" from Spillway Trail in Brazos Bend State Park. Needville, Texas, September 4, 2010
 Wading ibis bird in Brazos Bend State Park. Needville, Texas, June 2, 2012
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 Juvenile yellow-crowned night heron bird on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Group of baby alligators on west side of 40 Acre Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Cormorants on 40 Acre Lake in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Oaks and vines on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, December 14, 2008
 Blue heron bird near Pilant(?) Lake in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Alligator head floating in duckweed on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Group of people with Dallas Sierra Club on Pinnacles Trail. Big Bend National Park, November 26, 2009
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 - South Rim 11/30/97 morning (A trip to Big Bend Park, November 29 - 30, 1997)
 Golden Dome (administration building) at the University of Notre Dame. South Bend, Indiana, May 21, 1999.
 Alligator in duckweed on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Swamp milkweed (Asclepias perennis) on Spillway Trail in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Sneezeweed (bitterweed, Helenium amarum) with yellow ray flowers in dew that bend downward in Lick Creek Park. College Station, Texas, September 30, 2008
 Fruits of Texas madrone (Arbutus xalapensis) on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Wading yellow-crowned night-heron bird in Brazos Bend State Park. Needville, Texas, June 2, 2012
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 Alligator s head floating in west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Leeches on alligator s head on west shore of Elm Lake in Brazos Bend State Park. Needville, Texas, July 4, 2008
 Philadelphia fleabane (Erigeron philadelphicus) on Big Creek Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Alligator on west shore of Elm Lake in Brazos Bend State Park. Needville, Texas, April 24, 2010
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 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
 White ibis (Eudocimus albus) bird with long downcurved beak in swamp near Elm Lake in Brazos Bend State Park. Needville, Texas, September 4, 2010
 Hunting juvenile Common Moorhen(?) bird near Elm Lake in Brazos Bend State Park. Needville, Texas, September 4, 2010
 Great blue heron bird in Brazos Bend State Park. Needville, Texas, June 2, 2012
 Close up of yellow-crowned night-heron bird in Brazos Bend State Park. Needville, Texas, June 2, 2012
 Yellow-crowned night-heron bird standing on one leg in Brazos Bend State Park. Needville, Texas, June 2, 2012
 - South Rim (A trip to Big Bend Park, November 28, 1997, day)
 - South Rim (A trip to Big Bend Park, November 28, 1997, day)
 - South East Rim, evening (A trip to Big Bend Park, November 28, 1997, day and evening)
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 - South West Rim (A trip to Big Bend Park, November 29, 1997, day)
 - Emory Peak (A trip to Big Bend Park, November 29 - 30, 1997)
 Weathered wood on Pinnacles Trail near Juniper Flat. Big Bend National Park, Texas, November 22, 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
 Alligator walking from Old to New Horseshoe Lake across Loop Trail in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Bark of an oak tree on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Back-lit dwarf dandelion (Krigia occidentalis) on Pilant Slough Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Slopes of Chisos Mountains from Boot Spring Trail. Big Bend National Park, November 26, 2009
 - Boot Canyon 11/27/97 evening (A trip to Big Bend Park, November 27 - 28, 1997)
 - South Rim (A trip to Big Bend Park, November 28, 1997, day)
 - dayhike along South Rim (A trip to Big Bend Park, November 29, 1997, morning)
 - North East Rim 11/29/97 evening (A trip to Big Bend Park, November 29 - 30, 1997)
 Ducks in Saint Mary s Lake reflecting Golden Dome and Basilica of the Sacred Heart at the University of Notre Dame. South Bend, Indiana, May 21, 1999.
 Fresno Circle campsite near Dodson Trail at evening. Big Bend National Park, Texas, November 23, 2007
 Smokey Creek Trail near Trap Spring east from Mule Ear Overlook, view to the west. Big Bend National Park, Texas, November 25, 2007
 Yellow-crowned night-heron marsh bird near Pilant Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Common Moorhen marsh bird in west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Bridge across Pilant Lake spillway in Brazos Bend State Park. Needville, Texas, July 4, 2008
 - dayhike along North East Rim to Boot Springs (A trip to Big Bend Park, November 28, 1997, day and evening)
 - South Rim 11/30/97 morning (A trip to Big Bend Park, November 29 - 30, 1997)
 Herbertia flower north from Elm Lake in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Blooming violet ruella (Ruellia caroliniensis) on Pilant Slough Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 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
 Sunning young alligator infested with big leeches near Elm Lake in Brazos Bend State Park. Needville, Texas, September 4, 2010
 Little blue heron in Brazos Bend State Park. Needville, Texas, June 2, 2012
 Hunting great white egret (Ardea alba) bird in Brazos Bend State Park. Needville, Texas, June 2, 2012
 - 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)
 - 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)
 Crown Mountain, view from lower part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Scarlet pimpernel (Anagallis arvensis) on Hale Lake Loop Trail in Brazos Bend State Park. Needville, Texas, April 22, 2008
 Close-up ventral view of golden silk spider on Spillway Trail in Brazos Bend State Park. Needville, Texas, July 4, 2008
 - Pinnacles trail (A trip to Big Bend Park, November 27, 1997, morning and day)
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