 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
 El Capitan Trail and Mountain in Guadalupe Mountains National Park. Texas, December 27, 2007
 El Capitan Mountain and Trail in Guadalupe Mountains National Park. Texas, December 27, 2007
 El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 2007
 Frozen McKittrick Creek. Guadalupe Mountains National Park, Texas, December 28, 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
 Grotto in McKittrick Canyon, with icicles. Guadalupe Mountains National Park, Texas, December 28, 2007
 Prickly pears near 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
 Cactus on rocks of El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
 Agave on McKittrick Canyon Trail. 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
 View from beginning of El Capitan Trail in 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
 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
 Agave, cacti 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 at sunset, view from lower Roadside Park. 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
 El Capitan Mountain, view from upper Roadside Park at morning. Guadalupe Mountains National Park, Texas, December 28, 2007
 El Capitan Mountain, view from lower Roadside Park at morning. 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
 Alligator juniper (Juniperus deppeana) near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 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
 Meadow with bluebonnets (lupine) and yucca in Inks Lake State Park on Pecan Flats Trail west from Burnet. Texas, April 5, 2010.
 Magenta tinged echinocereus hedgehog actus on El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
 Rocks on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 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
 Hiker s staircase in Pine Spring Canyon, on Devils Hall Trail. Guadalupe Mountains National Park, Texas, December 28, 2007
 Dead juniper on Devils Hall Trail in Pine Spring Canyon. 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 near Guadalupe Spring in 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 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
 El Capitan Mountain at sunset, view from lower Roadside Park south from the mountain. Guadalupe Mountains National Park, Texas, December 28, 2007
 Gulf of Finland near Solnechnoye with Fort Totleben at horizon, 15 miles north-west from Saint Petersburg. Russia, September 8, 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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