 A creek in Noccalula Falls Park. Gadsden, Alabama, January 15, 2006
 A gorge in Noccalula Falls Park. Gadsden, Alabama, January 15, 2006
 Noccalula Falls. Gadsden, Alabama, February 1, 2007
 Laurel Falls near Orange Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 Lost Falls near Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 Limestone rocks near the falls in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Narrowed stream below the falls in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Mountain laurel flowers on Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 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
 Twin falls in Pedernales Falls State Park, from an overlook. Johnson City, Texas, November 7, 2009
 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
 Rapids of Glen creek in Watkins Glen State Park near upper entrance. New York, October 13, 2005
 Indian mallow (Abutilon fruticosa) near a parking of Upper falls in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Rapids of Tosna River. Sablino near Saint Petersburg, Russia, May 8, 2016
 Steel cable suspension bridge downstream from the falls in Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, August 17, 2008
 Rapids of Tosna River near Sablino, south from Saint Petersburg. Russia, May 21, 2011
 International students of Purdue University walking over rapids and tubs of a creek in Potholes Park (Fall Creek Gorge) near Pine Village. Indiana, June 5, 1999.
 Rapids of Lava River in Zhiharevo, east from Saint Petersburg. Russia, June 2, 2011
 Dry riverbed in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Texas aster with variegated fritillary(?) butterfly near a pond of Upper falls in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Small waterfall in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Waterfalls from the overlook in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Side waterfall in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Water stream in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Small waterfall in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Cracked limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Water cascades in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Water and rocks in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Giant boulder in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Water cascade in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Tip of a cypress knee in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Base of a cypress in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Dry cypress stump in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Leather lichen (Dermatocarpon) in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Gnarls on a cypress tree in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Texture of a dry cypress stump in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Forking of cypress roots in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Texture of cypress bark in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Growth on cypress roots in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Pattern of cypress roots in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Weathered cypress roots in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Black limestone rocks in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Small water stream in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Knotted cypress roots in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Various crustose lichens on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 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
 Hollow part of a cypress tree in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Crustose lichens of different colors on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Alligator skinned cypress roots in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Black lichen Verrucaria on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Base of a large cypress tree in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Leather lichen (Dermatocarpon) on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Leather lichen (Dermatocarpon) on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Base of a cypress tree at sunset in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Grey crustose lichen on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Buellia and other lichens on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Lichens and sorrel on shady limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Dirinaria lichen on a dry red cedar tree in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Boulders and rapids in Roshchinka River in Lindulovskaya Reserve near Roshchino, 30 miles north-west from Saint Petersburg. Russia, May 28, 2021
 Hollow part of a cypress tree at sunset in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Dust lichen (Lepraria) in shade of cliffs in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Ruffle lichen (Parmotrema) on a dry red cedar tree in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Leather lichen (Dermatocarpon) on limestone in a forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Smooth limestone rocks near the water stream in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Brown and orange crustose lichens on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Cypress roots enveloping a river boulder in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Button lichen (Buellia) on limestone near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Dark-green crustose lichen on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Molten cypress root engulfing a stone in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Some whitish lichen on a limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Tar-jelly lichen (Collema) on limestone conglomerate in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Stones embedded into a base of a cypress tree in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Ant Sarah Falls in village of Montour Falls. New York, November 3, 2005
 Shequaga Falls in village of Montour Falls. New York, November 1, 2005
 Taughannock Falls near Ithaca, view from upper falls overlook. New York, October 8, 2005
 Rapids of Roshchinka River in Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, July 31, 2017
 Dark water with rapids in Roshchinka River in Lindulovskaya Reserve near Roshchino, 30 miles north-west from Saint Petersburg. Russia, May 28, 2021
 Rapids in Roshchinka River in Lindulovskaya Larch Grove near Roshchino, 30 miles north-west from Saint Petersburg. Russia, August 4, 2024
 Close up of black and green lichen Verrucaria on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Entangled cypress roots growing over river boulders in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Button lichen (Buellia) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Dust lichen (Lepraria) on limestone in shade of cliffs in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Ruffle lichen (Parmotrema) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Weathered white boulder in area of Cypress Pool in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Pebbles inside a nest-like cavity of a cypress tree in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Patches of button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 White patch of Aspicilia lichen on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Green Cladonia lichen on sandstone or limestone in a forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Button lichen (Buellia) on limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Frozen Taughannock Falls near Ithaca, view from upper falls overlook. New York, December 10, 2005
 Taughannock Falls, view from upper falls overlook at rain. Ithaca, New York, November 9, 2005
 First snow at Taughannock Falls near Ithaca, view from upper falls overlook. New York, November 23, 2005
 Texas aster (Aster texanus) near a pond of Upper falls in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Taughannock Falls near Ithaca, view from upper falls overlook, at light snowfall. New York, November 23, 2005
 Taughannock Falls near Ithaca, view from upper falls overlook, at cold morning. New York, November 24, 2005
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