 Under Gorman Falls in Colorado Bend State Park. Bend, Texas, May 23, 2009
 Gorman Falls in Colorado Bend State Park. Bend, Texas, May 23, 2009
 Gorman Falls (view from a trail) in Colorado Bend State Park. Bend, Texas, May 23, 2009
 Mossy travertine formations at the base of Gorman Falls in Colorado Bend State Park. Bend, Texas, May 23, 2009
 Overlook of a bend of Pilant Slough in Brazos Bend State Park. Needville, Texas, December 14, 2008
 - 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)
 Bend of Colorado River from Bluff Trail Loop in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
 Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Oak forest on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Heron like bird on west side of Elm Lake(?) in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Blue heron bird near Pilant(?) Lake in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Pink flowers of pea family on Prairie Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Bark of an oak tree on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Sheep sorrel (Rumex) on Big Creek Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Floating alligator trunk on west side of Elm Lake(?) in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Sensitive brier (Schrankia uncinata)(?) on Prairie Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Some seed pods on Horseshoe Lake Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Alligator hiding in duckweed on west side of Elm 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
 Herbertia (Prairie nymph) on Horseshoe Lake Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Philadelphia fleabane (Erigeron philadelphicus) on Big Creek Loop Trail 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
 Ripening drupes of dewberry (Rubus trivialis) on Big Creek Loop 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
 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
 Blooming violet ruella (Ruellia caroliniensis) on Pilant Slough Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Close-up of an alligator nose and eyes floating in duckweed on west side of Elm Lake in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Yellow-crowned night-heron marsh bird on west side of Elm Lake 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
 Tiny white flowers of knotted hedgeparsley (Torilis nodosa) on Big Creek Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Brown furry caterpillar of salt marsh moth(?) (Estigmene acrea) near New Horseshoe Lake in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Yellow hairy caterpillar of salt marsh moth(?) (Estigmene acrea) on Horseshoe Lake Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Southeast Rim in fog. Big Bend National Park, November 27, 2009
 Cliffs of 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
 Dry tree on South Rim. Big Bend National Park, November 28, 2009
 Cacti and agaves on South Rim. Big Bend National Park, November 28, 2009
 Emory Peak Trail in fog. Big Bend National Park, November 27, 2009
 Boot Spring Trail. Big Bend National Park, November 26, 2009
 Agaves on South Rim at sunrise. Big Bend National Park, November 29, 2009
 Sunset from SW3 (Southwest Rim) campsite. Big Bend National Park, November 28, 2009
 Pine tree 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
 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
 Switchbacks of Blue Creek Trail. Big Bend National Park, November 29, 2009
 Crooked pine growing on South Rim. Big Bend National Park, November 28, 2009
 Fall colors of Boot Canyon. Big Bend National Park, November 27, 2009
 East summit of Emory Peak in fog. Big Bend National Park, November 27, 2009
 Most photographed spot with a pine tree on South Rim. Big Bend National Park, November 28, 2009
 Elephant Tusk Mountain from South Rim at sunrise. Big Bend National Park, November 29, 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
 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
 Emory Peak from lower section of Southwest Rim Trail. Big Bend National Park, November 28, 2009
 Fall colors 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
 Group of people with Dallas Sierra Club on Southeast Rim. Big Bend National Park, November 27, 2009
 Cliffs of Toll Mountain from Boot Spring 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
 Group of people with Dallas Sierra Club on Pinnacles Trail. Big Bend National Park, November 26, 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
 Santa Elena Canyon and mountains in Mexico from SW3 (Southwest Rim) campsite at sunrise. Big Bend National Park, November 29, 2009
 Sandy washes of Blue Creek Canyon near Homer Wilson Ranch. 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
 Group of peole with Dallas Sierra Club watching sunset from SW3 (Southwest Rim) campsite. Big Bend National Park, November 28, 2009
 Eroded pinnacles of pink volcanic tuff looking like a miniature Bryce Canyon on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Boot Rock from Boot Spring Trail. Big Bend National Park, November 28, 2009
 Boot Rock from Boot Spring Trail at sunrise. Big Bend National Park, November 28, 2009
 Drooping juniper (Juniperus flaccida Var. flaccida) on Southeast Rim. 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
 Little blue heron in Brazos Bend State Park. Needville, Texas, June 2, 2012
 A duck in Elm Lake in Brazos Bend State Park. Needville, Texas, February 15, 2020
 Turtles in Elm Lake in Brazos Bend State Park. Needville, Texas, February 15, 2020
 Spillway Trail in Brazos Bend State Park. Needville, Texas, February 15, 2020
 Ibis bird in Brazos Bend State Park. Needville, Texas, June 2, 2012
 Common Moorhen in Brazos Bend State Park. Needville, Texas, June 2, 2012
 Spillway Trail in Brazos Bend State Park. Needville, Texas, September 4, 2010
 East summit of Emory Peak, with north summit visible in fog. Big Bend National Park, November 27, 2009
 Casa Grande Peak of Chisos Mountains from Emory Peak Trail. Big Bend National Park, November 27, 2009
 Whistling duck bird in Brazos Bend State Park. Needville, Texas, June 2, 2012
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