 Irregularly shaped limestone formations along a passage of Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Limestone formations in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Passage in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Narrow passage in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Travertine speleothems along a passage in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Limestone tunnel in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Irregularly rounded- or scallop-shaped passages in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Drapery and ripple-shaped patterns of travertine flowstone speleothems in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Pointed formations in caves of Carlsbad Caverns. New Mexico, December 26, 2007
 Massive stalagmites in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 A column and other speleothems in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Flowstone feature in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Stalactites and massive stalagmites in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Lions Tails hanging in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Columns in a small side alcove in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Massive stalagmites in Hall of Giants of Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Stalactites and stalagmites in a small alcove along the side of Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 A narrow stalagmite with a large cluster of stalactites in the Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Huge stalagmite named "Rock of Ages" in Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 Speleothems (including stalactites, stalagmites, a column, and helictites) in an alcove of the Big Room of Carlsbad Caverns. New Mexico, December 26, 2007
 "Natural entrance" to Carlsbad Caverns. New Mexico, December 26, 2007
 Serpentine path of "Natural entrance" to Carlsbad Caverns. New Mexico, December 26, 2007
 Fresh snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 Plants in snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 Ocotillo bush near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 Cholla cactus in snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 Agaves and cacti in snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 Prickly pears cactus in snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 Star shaped fish bone in Al Aaliya Island (Jazirat al Aliyah). Qatar, March 27, 2013
 George Ashby s Phillips 66 gas station at crossing of Hwy 285 and FM 652. Orla, New Mexico, December 25, 2007
 Passage between stones on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 24, 2007
 Jackie and Hall Olds (Hal Old) store, grocery and cafe at crossing of Hwy 285 and FM 652. Orla, New Mexico, December 25, 2007
 A sign near Orla grocery near historical marker No. 3876 at crossing of Hwy 285 and FM 652. Orla, New Mexico, December 25, 2007
 Orla cafe served to feed workers in oil, gas, and sulphur fields, at crossing of Hwy 285 and FM 652. Orla, New Mexico, December 25, 2007
 Stalagmites in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 Passage near the edge of limestone cliffs in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 1, 2016
 The Watchtower in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 A cave in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 Stalagmites in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 Stalactites in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 A hall in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 Passage between stones near the edge of limestone cliffs in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 1, 2016
 Pluto s Anteroom(?) in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 Spacious hall in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 The King s Throne in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 Hall of the Mountain King(?) in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
 Animal bone on a beach in Fuwairit. Northern Qatar, December 19, 2014
 Mushroom-shaped limestone cliff in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
 Passage from Pavel I Throne Room in Gatchina Palace. Gatchina, a suburb of Saint Petersburg, Russia, June 20, 2009
 Plafond of Passage Room (Prokhodnaya)(?) of Gatchina Palace. Gatchina, a suburb of Saint Petersburg, Russia, June 20, 2009
 Mushroom shaped limestone cliff in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
 Salt Marsh east from north end of Bone Hill Road in Cape Cod. Barnstable, Massachusetts, December 16, 2004
 Beach Point Light on Sandy Neck, view from north end of Bone Hill Road in Cape Cod. Barnstable, Massachusetts, December 16, 2004
 Latticework of shaded passage of Ceremonial Court passage in Education City. Doha, Qatar, January 26, 2012
 Mushroom shaped limestone rock in area of Jebel Al-Nakhsh (Khashm an Nakhsh) in south-western Qatar, March 11, 2016
 Fresnel-shaped patterns on yellow limestone at the bottom of small caves of Nahal Darokh river 4.5 miles east from Sde Boker. The Middle East, April 9, 2001
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 - Pecos Wilderness in New Mexico 8/30/97 (Dallas - a trip to New Mexico mountains, July 11 - August 30, 1997)
 A room in Museum of Fine Arts. Houston, Texas, June 17, 2007
 Billiards room in Yusupov Palace. Saint Petersburg, Russia, September 6, 2007
 Precious Room of Yusupov Palace. Saint Petersburg, Russia, September 6, 2007
 Red room in Grand Palace. Peterhof, a suburb of Saint Petersburg, Russia, August 31, 2007
 Mirror in Precious Room of Yusupov Palace. Saint Petersburg, Russia, September 6, 2007
 Room in Pavlovsky Palace. Pavlovsk, a suburb of Saint Petersburg, Russia, August 29, 2007
 A room in Grand Palace. Peterhof, a suburb of Saint Petersburg, Russia, August 31, 2007
 Gold Drawing-room in Hermitage museum. Saint Petersburg, Russia, August 14, 2007
 Statue in Precious Room of Yusupov Palace. Saint Petersburg, Russia, September 6, 2007
 Entrance of Majolica Room in Hermitage museum. Saint Petersburg, Russia, August 14, 2007
 Some passage west from the city. Petra, Jordan, December 1, 2002
 Green room in Grand Palace. Peterhof, a suburb of Saint Petersburg, Russia, August 31, 2007
 Decorated room in Grand Palace. Peterhof, a suburb of Saint Petersburg, Russia, August 31, 2007
 Dining room in Grand Palace. Peterhof, a suburb of Saint Petersburg, Russia, August 31, 2007
 Room corner in Grand Palace. Peterhof, a suburb of Saint Petersburg, Russia, August 31, 2007
 Room with portraits in Grand Palace. Peterhof, a suburb of Saint Petersburg, Russia, August 31, 2007
 Red living room in Pavlovsky Palace. Pavlovsk, a suburb of Saint Petersburg, Russia, August 29, 2007
 Living room in Pavlovsky Palace. Pavlovsk, a suburb of Saint Petersburg, Russia, August 29, 2007
 Skeletal remains of a pier that used to hold Balinese Room, a nightclub and a former dancing hall and an illegal casino at 2108 Seawall Boulevard that extended 600 feet from Seawall Boulevard at 21st Street into the Gulf of Mexico and that was washed away by hurricane Ike. Galveston, Texas, November 15, 2008
 Entrance of Tukish Room from Mauritanian Parlor in Yusupov Palace. Saint Petersburg, Russia, September 6, 2007
 Room in Alexander Palace. Tsarskoe Selo (Pushkin), suburb of Saint Petersburg, Russia, September 2, 2007
 Illuminated passage at Nevsky Prospect. Saint Petersburg, Russia, December 27, 2014
 Reading room in Alexander Palace. Tsarskoe Selo (Pushkin), suburb of Saint Petersburg, Russia, September 2, 2007
 A passage in Pavlovsky Palace. Pavlovsk, suburb of Saint Petersburg, Russia, December 24, 2005
 A passage near Kamennoostrovsky Prospect in Petrogradskaya Storona neighborhood. Saint Petersburg, Russia, December 31, 2005
 Reconstruction of Soviet style boiler-room (kotelnaya) in Museum of Political History (Kshesinskaya Mansion). Saint Petersburg, Russia, August 25, 2007
 Ghostly formations near Paradise Point Drive in Bay Saint Louis. Mississippi, April 16, 2006
 Newport Bridge and East Passage of Narragansett Bay at morning dusk, view from Taylor Point. Jamestown, Rhode Island, December 18, 2004
 Salt formations in Dead Sea north from Ein Bokek after a recent rain. The Middle East, November 2, 2002
 Pear-shaped puffball mushrooms (Lycoperdon pyriforme) shaped like pointed eggs on a birch tree near Lisiy Nos, west from Saint Petersburg, Russia, August 23, 2016
 Red sandstone formations of Nahal Amir wadi, 5 miles north from Eilat. The Middle East, March 25, 2002
 Statue of a man playing with a bone in Russian Museum. Saint Petersburg, Russia, August 11, 2012
 Bone set of a camel in desert. Harrarah, 40 miles south-west from Doha. Qatar, March 5, 2010
 Billiard Room (Turkish Room) of Yusupov Palace. Saint Petersburg, Russia, July 8, 2009
|