Jack Dykinga / Scalding hot water continuously spouting behind layers of mineral deposits, Fly Geyser, Black Rock Desert, Great Basin Desert, Nevada, USA
01396368
Jack Dykinga / Scalding hot water continuously spouting behind layers of mineral deposits, Fly Geyser, Black Rock Desert, Great Basin Desert, Nevada, USA
01501898
John Cancalosi / Selenite 'rose', a form of gypsum, Mexico.
01467963
RHONDA KLEVANSKY / Petroglyphs on black dolomite rock, Richterveld National Park and World Heritage Site, Northern Cape, South Africa, August 2011.
01467962
RHONDA KLEVANSKY / Petroglyphs on black dolomite rock, Richterveld National Park and World Heritage Site, Northern Cape, South Africa, August 2011.
01467961
RHONDA KLEVANSKY / Petroglyphs on black dolomite rock, Richterveld National Park and World Heritage Site, Northern Cape, South Africa, August 2011.
01418152
David Welling / Male Great Basin or Desert collared lizard (Crotaphytus insularis bicinctores) sits on a rock outcrop in Redding canyon, Owens valley, Inyo county, California, United States
01390404
Konrad Wothe / Stony Desert, Black Desert, Libya, North Africa, November 2007
01292062
Jenny E. Ross / Female Black-footed rock wallaby (Petrogale lateralis) with a joey in her pouch, preparing to launch herself from a rock ledge. West MacDonnell National Park, Northern Territory, Australia. September
01141118
Jason Smalley / Shiny black volcanic rock strewn over the sand in the Black Desert, Western-Egypt.
01141117
Jason Smalley / Shiny black volcanic rock strewn over the sand in the Black Desert, Western-Egypt.
01141119
Jason Smalley / Shiny black volcanic rock strewn over the sand in the Black Desert, Western-Egypt.
01141114
Jason Smalley / Shiny black volcanic rock strewn over sand in the Black Desert, Western-Egypt.
01141113
Jason Smalley / Shiny black volcanic rock strewn over sand in the Black Desert, Western-Egypt.
01141116
Jason Smalley / Shiny black volcanic rock strewn over sand in the Black Desert, Western-Egypt.
01141115
Jason Smalley / Shiny black volcanic rock strewn over sand in the Black Desert, Western-Egypt.
00175129
Tim Fitzharris / Cascades tumbling 110 feet at Emerald Pools, note the black streaks called desert varnish, Zion National Park, Utah
00175128
Tim Fitzharris / Cascades tumbling 110 feet at Emerald Pools, note the black streaks called desert varnish, Zion National Park, Utah
00175127
Tim Fitzharris / Cascades tumbling 110 feet at Emerald Pools, note the black streaks called desert varnish, Zion National Park, Utah
00570760
Scott Leslie / Volcanic field, Black Rock Desert, Markagunt Plateau, Utah
00570759
Scott Leslie / Volcanic field, Black Rock Desert, Markagunt Plateau, Utah
00175181
Tim Fitzharris / Cascades tumbling 110 feet at Emerald Pools, note the black streaks called desert varnish, Zion National Park, Utah
01728443
Jack Dykinga / Desert golds (Geraea canescens) flowering after El Nino rains among the basalt hillsides of the Black Mountains, Amargosa Range, Death Valley National Park, California, USA. January.
01728442
Jack Dykinga / Desert golds (Geraea canescens) flowering after El Nino rains among the basalt hillsides of the Black Mountains, Amargosa Range, Death Valley National Park, California, USA. January.
01717332
Eric Baccega / Black hairy thicktailed scorpion (Parabuthus villosus), Palmwag Conservancy, Damaraland, Namibia.
01717331
Eric Baccega / Black hairy thicktailed scorpion (Parabuthus villosus), Palmwag Conservancy, Damaraland, Namibia.
01690615
Bruce Thomson / Black-footed rock wallaby (Petrogale lateralis) on steep rocky mountainside, Alice Springs, Northern Territory, Australia.
01686938
Ugo Mellone / White-crowned black wheatear (Oenanthe leucopyga) perched on a rock, Rissani, Southern Morocco, Africa.
01686836
Ugo Mellone / Spiny-tailed lizard (Uromastyx dispar) basking on a rock, Aousserd, Western Sahara. Africa.
01662878
Jack Dykinga / Scalding hot water continuously spouting behind layers of mineral deposits, Fly Geyser, Black Rock Desert, Great Basin Desert, Nevada, USA