On a hill south from Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
Hedgehog cactus (Echinocereus viridiflorus) on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
Magenta tinged prickly pears cactus on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
Cliff above Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
Purple spineless prickly pears cactus in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
Totem-like columns of volcanic tuff across Limpia Creek, view from Road 17. Fort Davis, Texas, December 29, 2007
Columnar jointed palisade appearance of vertical lava flows along Limpia Canyon, view from Road 17. Fort Davis, Texas, December 29, 2007
Prickly pears and yucca near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
- Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
- Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
- Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
- Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
- Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
Burnett Creek near Davis Ferry Bridge. Indiana, November 26, 1999
Soaptree yucca (Yucca elata) in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Davis Ferry Bridge across Wabash River north from Lafayette. Indiana, September 11, 1999.
View of Wabash River from Davis Ferry Bridge north from Lafayette. Indiana, January 31, 1998.
Joseph Hernandez-Davis House (1868) at 1641 Amelia Street. New Orleans, Louisiana, April 24, 2005.
Mrs. Jetta Davis house (1887) at 1712 Winnie Street in East End Historic District. Galveston, Texas, January 1, 2011
Mrs. Jetta Davis house (1887) at 1712 Winnie Street in East End Historic District. Galveston, Texas, November 15, 2008
Soaptree yucca (Yucca elata) in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
El Capitan Mountain (zoomed), view to the west in Guadalupe Mountains National Park. Texas, December 27, 2007
Jake Davis(?) house on Postoffice Street in East End Historic District from a corner of 18th Street. Galveston, Texas, January 1, 2011
Nike Missiles at the entrance of Fort Hancock Historic District. Sandy Hook, New Jersey, March 11, 2007
Marble tomb of Jeff Davis Pistole (9/15/1861-7/9/1902) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
Frozen McKittrick Creek. Guadalupe Mountains National Park, Texas, December 28, 2007
El Capitan Mountain and Trail in Guadalupe Mountains National Park. Texas, December 27, 2007
El Capitan Trail and Mountain in Guadalupe Mountains National Park. Texas, December 27, 2007
El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 2007
Lost Falls near Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
Laurel Falls near Orange Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
View from beginning of El Capitan Trail in Guadalupe Mountains National Park. Texas, December 27, 2007
Grotto in McKittrick Canyon, with icicles. Guadalupe Mountains National Park, Texas, December 28, 2007
Agaves and El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 2007
Prickly pears near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
Agave on McKittrick Canyon Trail. Guadalupe Mountains National Park, Texas, December 28, 2007
Cactus on rocks of El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
Dead tree from El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
Hedgehog cactus near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Bark of alligator juniper in McKittrick Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Agave, cacti and El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 2007
Hunter Line Cabin in McKittrick Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Cushion cactus and El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 2007
Bluebonnets (lupine) and yucca in Inks Lake State Park on Pecan Flats Trail west from Burnet. Texas, April 5, 2010.
Spiral hill west from the entrance to Timna Park. The Middle East, April 25, 2001
El Capitan Mountain, view from lower Roadside Park at morning. Guadalupe Mountains National Park, Texas, December 28, 2007
El Capitan Mountain at sunset, view from lower Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
El Capitan Mountain, view from upper Roadside Park at morning. Guadalupe Mountains National Park, Texas, December 28, 2007
El Capitan Mountain after sunset, view from lower Roadside Park. 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
Slopes of Frijole Mountain from McKittrick Canyon Trail. Guadalupe Mountains National Park, Texas, December 28, 2007
Rocks in Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Alligator juniper (Juniperus deppeana) near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
Meadow with bluebonnets (lupine) and yucca in Inks Lake State Park on Pecan Flats Trail west from Burnet. Texas, April 5, 2010.
Rocks on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Magenta tinged echinocereus hedgehog actus on El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
El Capitan Mountain with cholla cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
El Capitan Mountain with prickly pears cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
Black rhesus macaque monkey chained at the entrance of a farm near Al Thugab Fort. North-west coast, Qatar, June 20, 2015
Dead juniper 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
Mountain laurel flowers on Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
View of Timna Mountains to the south-west from entrance road to Timna Park. The Middle East, March 15, 2001
Upper section of Hiker s Staircase near Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Echinocereus cacti growing on ruins of Hunter Line shack in McKittrick Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Texas madrone in McKittrick Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Guadalupe spring from El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
Color guard yucca (Yucca filamentosa) in Antique Rose Emporium. Independence, Texas, April 4, 2022
El Capitan Mountain from southern foot of the mountain. Guadalupe Mountains National Park, Texas, December 27, 2007
El Capitan Mountain from a trail at the foot of the mountain. 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
Gulf of Finland near Solnechnoye with Fort Totleben at horizon, 15 miles north-west from Saint Petersburg. Russia, September 8, 2007
El Capitan Mountain at sunset, view from lower Roadside Park south from the mountain. Guadalupe Mountains National Park, Texas, December 28, 2007
Split rock and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
"Natural entrance" to Carlsbad Caverns. New Mexico, December 26, 2007
Yucca plant on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
Yucca leaves on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
Texas madrone (Arbutus xalapensis) on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Peeling bark of Texas madrone 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
Serpentine path of "Natural entrance" to Carlsbad Caverns. New Mexico, December 26, 2007
Color Guard Yucca (Yucca filamentosa) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 27, 2009
A meadow and aspens west from Horn Creek Ranch in Sangre de Cristo Mountains. Colorado, June 30, 2007
Color Guard Yucca (Yucca filamentosa) at sunrise in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 15, 2009
Yucca leaves in Hensel Park. College Station, Texas, December 31, 2017
Rosette of leaves of Color Guard Yucca (Yucca filamentosa) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 27, 2009
A towpath after heavy rains in Delaware and Raritan Canal State Park south from Road 518 crossing. Rocky Hill, New Jersey, April 19, 2007
People from Dallas Sierra Club west from Horn Creek Ranch in Sangre de Cristo Mountains. Colorado, July 1, 2007
Waterfall of Can Creek from West Trail in Lost Maples State Natural Area. Vanderpool, Texas, December 30, 2007
The Pioneers statues west of entrance of Louisiana State Capitol. Baton Rouge, Louisiana, December 2, 2006
Agricultural emblem over the entrance of Civil Engineering Building on campus of Texas A and M University. College Station, Texas, December 19, 2007
Horse skull statue at the entrance of Animal Industries Building on campus of Texas A and M University. College Station, Texas, December 19, 2007
Sickle and rye emblem over the entrance of Scoates Hall (Agricultural education) on campus of Texas A and M University. College Station, Texas, December 19, 2007
Military tomb of David Hill in Calvert Beauty Cemetery. Calvert, Texas, December 8, 2007
Stone mosque at the entrance of Al-Rekayat Fort in Umm Jasim area. Northern Qatar, June 6, 2015
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