 Laurel Falls near Orange Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 Mountain laurel flowers on Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 Noccalula Falls. Gadsden, Alabama, February 1, 2007
 Turquois pool of Bee Creek near Wolf Mountain Trail in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Rapids in Noccalula Falls Park. Gadsden, Alabama, January 15, 2006
 A creek in Noccalula Falls Park. Gadsden, Alabama, January 15, 2006
 A gorge in Noccalula Falls Park. Gadsden, Alabama, January 15, 2006
 Frozen Buttermilk Falls on Mountain Road in Delaware Water Gap. New Jersey, March 3, 2007
 El Capitan Mountain from a trail at the foot of the mountain. Guadalupe Mountains National Park, Texas, December 27, 2007
 A farm west from Hidden Falls, view from Mountain Road. Delaware Water Gap, New Jersey, March 3, 2007
 Blue marker of Lost Pines Trail in Bastrop State Park. Bastrop, Texas, January 5, 2013
 Blue marker of Lost Pines Trail in Bastrop State Park. Bastrop, Texas, October 5, 2013
 Lost Pines Trail in Bastrop State Park. Bastrop, Texas, November 4, 2007
 Lost Pines Trail in mist in Bastrop State Park. Bastrop, Texas, November 4, 2007
 Blue spiderwort (Tradescantia) flowers on Lost Pines Trail in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Many Warts mushroom (Amanita polypyramis) on Lost Pines Trail in Bastrop State Park. Bastrop, Texas, November 4, 2007
 El Capitan Mountain from southern foot of the mountain. Guadalupe Mountains National Park, Texas, December 27, 2007
 Falls near Old Lodging Railroad at Upper Otter Creek Overlook at mile 35 of Blue Ridge Parkway. Buena Vista, Virginia, May 17, 2007
 El Capitan Mountain at sunset, view from lower Roadside Park south from the mountain. Guadalupe Mountains National Park, Texas, December 28, 2007
 Sabinal River from East Trail in Lost Maples State Natural Area. Vanderpool, Texas, December 30, 2007
 Waterfall of Can Creek from West Trail in Lost Maples State Natural Area. Vanderpool, Texas, December 30, 2007
 Lower Falls of Yellowstone River from a lookout in Canyon Village. Yellowstone Park, Wyoming, July 24, 2010
 Lower Falls of Yellowstone River from Grand View Lookout Point in Canyon Village. Yellowstone Park, Wyoming, July 24, 2010
 Trammel Crossing in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Blue curls (Fiddleneck, Phacelia congesta) in McKinney Falls State Park near Austin. Texas, May 10, 2009
 Flowers of Blue curls (Fiddleneck, Phacelia congesta) in McKinney Falls State Park near Austin. Texas, May 10, 2009
 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
 Cypresses east from Trammel Crossing in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Cypress roots near Trammel Crossing in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 On a hill south from Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Yucca on a hill west from entrance 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
 Rocks on a slope of Freshman Mountain east from Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
 Cypress roots near Trammel Crossing at evening in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Southern Jack O Lantern mushrooms (Omphalotus subilludens) on Lost Pines Trail in Lost Pines State Park. Bastrop, Texas, November 14, 2009
 Hedgehog cactus (Echinocereus viridiflorus) on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Pioneer cemetery near northern park boundary at Wilson Ranch Road in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Magenta tinged prickly pears cactus on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 El Capitan Mountain from a 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 and Trail in Guadalupe Mountains National Park. Texas, December 27, 2007
 Agaves and El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 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
 A snake on a trail south from Mountain Lakes in John Witherspoon Woods park. Princeton, New Jersey, April 28, 2007
 Slopes of Frijole Mountain from McKittrick Canyon Trail. Guadalupe Mountains National Park, Texas, December 28, 2007
 View from lookout near south part of Orange (Vista) trail in Devils Hopyard State Park. East Haddam, Connecticut, May 22, 2004
 Blue flowers of mealy sage (Salvia farinacea) on opposite side of the river downstream from Cypress Pool in Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 Payne Road in Freetown/Fall River State Forest. Massachusetts, October 24, 2004
 Crown Mountain, view from lower part of Juniper Canyon Trail. Big Bend National Park, Texas, November 23, 2007
 Bee Mountain, view to the west from Smokey Creek Trail near Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Dwarf sunflowers (Old-man-of-the-mountain, Rydbergia grandiflora, Hymenoxys grandiflora) on a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
 Lower Falls in Taughannock Falls State Park. Ithaca, New York, October 11, 2005
 Lake below the falls in Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 A butterfly on Payne Road in Freetown - Fall River State Forest. Massachusetts, July 12, 2003
 Goat Mountain, view to the north from Smokey Creek Trail near Mule Ear Spring. Big Bend National Park, Texas, November 25, 2007
 Cypress Pool below the falls in Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 Creek and a cypress in McKinney Falls State Park, near Upper falls. Austin, Texas, October 26, 2008
 Twin falls in Pedernales Falls State Park, from an overlook. Johnson City, Texas, November 7, 2009
 Narrowed stream below the falls in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Limestone rocks near the falls in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Passage between stones on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 24, 2007
 Cacti on a slope of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 24, 2007
 Weathered stones on a slope of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
 CCC Water Hole Structure No. 2 at Payne Road in Freetown - Fall River State Forest. Massachusetts, October 26, 2003
 Indian mallow (Abutilon fruticosa) near a parking of Upper falls in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Appalachian Trail near Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 El Capitan Mountain Trail near Guadalupe Spring in 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
 Rocks and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 Split rock and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
 Blue-edged scale lichen (Psorula rufonigra) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Blooming oak on Appalachian Trail south from Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 Oaks on Appalachian Trail south from Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 Stones on Appalachian Trail south from Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 Forest on Ridge Trail near Trailpoint 13 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
 Gaywings flower (fringed polygala) on Buttermilk Falls Trail. Delaware Water Gap, New Jersey, May 12, 2007
 Trap Mountain(?) west from Smokey Creek Trail near Trap Spring east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Texas aster with variegated fritillary(?) butterfly near a pond of Upper falls in McKinney Falls State Park. Austin, Texas, October 26, 2008
 A cotton mill in Dunn s Falls Water Park. Meridian, Mississippi, May 20, 2007
 Prismatic rocks in High Mountain Park. Paterson, New Jersey, March 25, 2007
 Dogwood in a forest on Ridge Trail east Trailpoint 13 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
 Mechanisms of a grist mill in Dunns Falls Park. Meridian, Mississippi, February 1, 2007
 View of a slope of Colony Baldy Mountain from Macey Lakes Trail in Sangre de Cristo Mountains. Colorado, July 2, 2007
 Dwarf yellow butterfly (Dainty Sulphur, Nathalis iole) on Texas aster near a pond of Upper falls in McKinney Falls State Park. Austin, Texas, October 26, 2008
 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 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 (zoomed), view to the west in Guadalupe Mountains National Park. Texas, December 27, 2007
 Showy Orchis (Galearis spectabilis) orchid wildflower on Ridge Trail above Trailpoint 1 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
 El Capitan Mountain with cholla cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
 Skunk cabbage on pipeline right of way crossing a creek in Mountain Lakes North park. Princeton, New Jersey, April 27, 2007
 Concrete remains south from Mountain Lakes in John Witherspoon Woods park. Princeton, New Jersey, April 27, 2007
 Century plant and Elephant Tusk Mountain, view from South Rim. Big Bend National Park, Texas, November 22, 2007
 Texas aster (Aster texanus) near a pond of Upper falls in McKinney Falls State Park. Austin, Texas, October 26, 2008
 El Capitan Mountain with prickly pears cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
 Leaves of skunk cabbage on pipeline right of way crossing a creek in Mountain Lakes North park. Princeton, New Jersey, April 27, 2007
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