 Canyon of Yellowstone River from Grand View Lookout Point in Canyon Village. Yellowstone Park, Wyoming, July 24, 2010
 Yellowstone River, view to the east from a lookout in Canyon Village. Yellowstone Park, Wyoming, July 24, 2010
 Yellowstone River, eastern view from a lookout in Canyon Village. Yellowstone Park, Wyoming, July 24, 2010
 Lower Falls of Yellowstone River from a lookout in Canyon Village. Yellowstone Park, Wyoming, July 24, 2010
 Yellowstone River from Grand View Lookout Point 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
 Dry trees near a lookout in Canyon Village. Yellowstone Park, Wyoming, July 24, 2010
 Valley of Yellowstone River, view from Grand Loop Road. Yellowstone Park, Wyoming, July 24, 2010
 Old Faithful Geyser. Yellowstone Park, Wyoming, July 24, 2010
 Firehole Falls. Yellowstone Park, Wyoming, July 24, 2010
 Forest at East entrance of Yellowstone Park. Wyoming, July 24, 2010
 Dragon s Mouth in mud volcano area in Yellowstone Park. Wyoming, July 24, 2010
 Eruption of Great Fountain Geyser. Yellowstone Park, Wyoming, July 24, 2010
 Creek in area of Norris Geyser Basin(?). Yellowstone Park, Wyoming, July 24, 2010
 Buffalo crossing Grand Loop Road in Yellowstone Park. Wyoming, July 24, 2010
 Rock near Yellowstone Park, view from East Entrance Road. Wyoming, July 24, 2010
 Chocolate pot in area of Norris Geyser Basin(?). Yellowstone Park, Wyoming, July 24, 2010
 Horse in a window of a trailer parked near Old Faithful Geyser. Yellowstone Park, Wyoming, July 24, 2010
 Great Fountain Geyser, view from Firehole Lake Drive. Yellowstone Park, Wyoming, July 24, 2010
 Cooked forest above Black Dragons Caldron (Mud volcano area) in Yellowstone Park. Wyoming, July 24, 2010
 Yellowstone Lake and hot springs, view from Steamboat Point. Wyoming, July 24, 2010
 Dead trees in are of calcium carbonate deposit in Norris Geyser Basin. Yellowstone Park, Wyoming, July 24, 2010
 Nahal Mishmar canyon and the Dead Sea from the southern lookout. The Middle East, February 21, 2002
 Wind River from Hot Springs Park. Thermopolis, Wyoming, July 25, 2010
 View of a giant dry waterfall at the end of the canyon from the southern side of the Bokek creek canyon. The Middle East, February 22, 2001
 A small canyon of Ein Akev Tahton spring in Nahal Akev creek canyon, 3 miles north-east from Avdat. The Middle East, February 15, 2001
 Ein Akev Tahton spring creating a small sub-canyon in Nahal Akev creek canyon, 3 miles north-east from Avdat. The Middle East, February 15, 2001
 Ein Akev Tahton spring creating a small sub-canyon in Nahal Akev creek canyon, 3 miles north-east from Avdat. The Middle East, February 15, 2001
 Ein Akev Tahton spring creating a small sub-canyon in canyon of Nahal Akev wadi, 3 miles north-east from Avdat. The Middle East, November 17, 2002
 View of the opposite side of the canyon and Ein Bokek at Dead Sea from the southern side of the Bokek creek canyon. The Middle East, February 22, 2001
 Canyon of Zohar River near Arad. The Middle East, March 25, 2000
 Canyon of Zohar River, near Arad. The Middle East, April 15, 2000
 Canyon of Zohar River, near Arad. The Middle East, April 15, 2000
 A canyon dividing the ridge of Montfort Castle, 1 miles north-west from Hila village. Galilee, the Middle East, March 31, 2002
 Canyon of Tosna River near Sablino, south from Saint Petersburg. Russia, May 21, 2011
 Canyon of Nahal Sekhvee River north from Safed. The Middle East, April 19, 2001
 View of a canyon from Pinch Em Tight Trail. Red River Gorge, Kentucky, November 7, 1999.
 Rhododendron in a canyon, view from Rough Trail. Red River Gorge, Kentucky, November 6, 1999.
 Bottom of a canyon, view from Sheltowee Trail. Red River Gorge, Kentucky, November 6, 1999.
 Nahal Shani river above Red Canyon, 9 miles north from Eilat. The Middle East, February 7, 2002
 A dry canyon of Nahal Mishmar river, after its turn to the north, near Dead Sea. The Middle East, February 21, 2002
 Nahal Shani river above Red Canyon, 9 miles north from Eilat. The Middle East, February 7, 2002
 Bamboo brushes on the bottom of a canyon near Sheltowee Trail. Red River Gorge, Kentucky, November 6, 1999.
 Nahal Shani river below Red canyon, 9 miles north from Eilat. The Middle East, February 7, 2002
 Nahal Shani river below Red canyon, 9 miles north from Eilat. The Middle East, February 7, 2002
 Nahal Tseelim River Canyon, 2 miles north from Masada. The Middle East, January 20, 2001
 Saint George Monastery in a canyon of Wadi Kelt River, near Jericho. The Middle East, April 15, 2000
 Canyon of Wadi Kelt River and Saint George Monastery, near Jericho. The Middle East, April 15, 2000
 Saint George Monastery in a canyon of Wadi Kelt River, near Jericho. The Middle East, April 15, 2000
 In Saint George Monastery in a canyon of Wadi Kelt River, near Jericho. The Middle East, April 15, 2000
 Saint George Monastery in a canyon of Wadi Kelt River, near Jericho. The Middle East, April 15, 2000
 Canyon of Wadi Kelt River and Saint George Monastery, near Jericho. The Middle East, April 15, 2000
 Multicolored clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Orange and red clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 View of canyon walls at evening from Sheltowee Trail near Chimney Top Rock. Red River Gorge, Kentucky, November 6, 1999.
 Canyon of Nahal Keziv river 2.5 miles north-west from Mi ilia. Galilee, the Middle East, March 31, 2002
 Green and red clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Rainbow Terraces in Hot Springs State Park. Thermopolis, Wyoming, July 23, 2010
 A road to Saint George Monastery and an aqueduct in a canyon of Wadi Kelt River, near Jericho. The Middle East, April 15, 2000
 Brittlestem mushrooms Psathyrella clivensis(?) at the bottom of Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Parasitic plants in Beartrap Meadow County Park on Casper Mountain. Wyoming, July 21, 2010
 Brown brittlestem mushrooms Psathyrella clivensis(?) at the bottom of Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 View of canyon of Nahal Keziv river from trail 2223, 2 miles north-west from Mi ilia. Galilee, the Middle East, March 31, 2002
 Yellow lady slipper orchid (Cypripedium calceolus) in a canyon of Lava River. Zhikharevo, east from Saint Petersburg, Russia, June 4, 2011
 Canyon of Bokek River and Dead Sea at Ein Bokek. The Middle East, February 22, 2001
 Canyon of Bokek River and Dead Sea at Ein Bokek. The Middle East, February 22, 2001
 Canyon of Bokek River and Dead Sea at Ein Bokek. The Middle East, February 22, 2001
 Canyon of Bokek River and Dead Sea at Ein Bokek. The Middle East, February 22, 2001
 Upper terraces of a canyon of Bokek River near Ein Bokek. The Middle East, February 22, 2001
 Canyon of Bokek River and Dead Sea at Ein Bokek, zoomed. The Middle East, February 22, 2001
 A cave at the entrance to a canyon of Bokek River. Ein Bokek, the Middle East, February 22, 2001
 View from trail 2223 overlooking canyon of Nahal Keziv river, 2 miles north-west from Mi ilia. Galilee, the Middle East, March 31, 2002
 Flowers along trail 2223 overlooking canyon of Nahal Keziv river, 2 miles north-west from Mi ilia. Galilee, the Middle East, March 31, 2002
 Giant dry waterfall at the end of a canyon of Bokek River near Ein Bokek and a rim of a desert plateau. The Middle East, February 22, 2001
 Nahal Shani river east from Red canyon, 9 miles north from Eilat. The Middle East, February 7, 2002
 Yellow stonecrop (Sedum) in Rotary Park near Garden Creek Waterfall, south from Casper. Wyoming, July 19, 2010
 Yellow coralroot (Corallorhiza trifida) in Beartrap Meadow County Park on Casper Mountain. Wyoming, July 21, 2010
 Yellow Gaillardia flower in Rotary Park near Garden Creek Waterfall, south from Casper. Wyoming, July 19, 2010
 White geranium like flower in Rotary Park near Garden Creek Waterfall, south from Casper. Wyoming, July 20, 2010
 Sulphur Flower (Eriogonum umbellatum) in Beartrap Meadow County Park on Casper Mountain. Wyoming, July 21, 2010
 Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 View of a cave from trail 2223 overlooking canyon of Nahal Keziv river, 2 miles north-west from Mi ilia. Galilee, the Middle East, March 31, 2002
 Flowers of marsh marigold (kingcup, Caltha palustris, Russian name Kaluzhnitsa) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Sego Lily (Calochortus nuttallii) in Rotary Park near Garden Creek Waterfall, south from Casper. Wyoming, July 19, 2010
 Rock Buckwheat (Eriogonum sphaerocephalum) in Rotary Park near Garden Creek Waterfall, south from Casper. Wyoming, July 20, 2010
 Close up of Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Back lit Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 View from Road 20/26 west from Casper. Wyoming, July 25, 2010
 Participants of Quantum Summer School conference visiting Beartrap Meadow County Park on Casper Mountain. Wyoming, July 21, 2010
 A river flowing in a canyon with birches and pines at Karelia Isthmus between Lembolovo and Orekhovo (a popular place for hiking and skiing), 30 miles north from Saint Petersburg. Russia, April 19, 1999.
 Quantum Summer School conference. Casper, Wyoming, July 26, 2010
 Landscape from Independence Rock west from Casper. Wyoming, July 22, 2010
 Black hoverfly Cheilosia on a yellow flower of Lesser celandine (Ranunculus ficaria, Russian name Chistyak) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 D. Watson at Quantum Summer School conference. Casper, Wyoming, July 26, 2010
 M. Scully at Quantum Summer School conference. Casper, Wyoming, July 26, 2010
 D. Herchbach at Quantum Summer School conference. Casper, Wyoming, July 26, 2010
 Teensleep Creek in Cloud Peak Wilderness at evening. Wyoming, July 30, 2010
 M. Scully at Quantum Summer School conference. Casper, Wyoming, July 26, 2010
 D. Mazziotti at Quantum Summer School conference. Casper, Wyoming, July 28, 2010
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