Desert-dwelling elephants (Loxodonta africana africana) in dry river bed, Namibia, Africa

Dry river bed with red sand in Desert Park at Alice Springs near MacDonnell Ranges in Northern Territory, Central Australia, Pacific

Oryx in dry river bed, Namibia, Africa

A line of green vegetation marks a dry river bed in the Valley of the Gods, with cliff formations in the background, in Utah, United States of America, North America

Desert-dwelling elephants (Loxodonta africana africana) in dry river bed, Namibia, Africa

Dry river bed, Skeleton Coast Park, Namibia, Africa

Cracked river bed in drought, Mexico, North America

Dried river bed, Kaokoland, Namibia, Africa

Cracked river bed in drought, Mexico, North America

Flash flood in oued (river bed) in normally dry Algerian Sahara region, Algeria, North Africa, Africa

Houses and people walking in dry river bed caused by erosion, near Petionville, Haiti, West Indies, Central America

A dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

A dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Women fetching water in the hanamerant area ,meket, ethiopia, women fetching water early in the morning. The wells in this area are empty during the dry season,forcing women to walk very long distance to fetch water in the nearest river bed. Ethiopia

A dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Women fetching water early in the morning. The wells in this area are empty during the dry season,forcing women to walk very long distance to fetch water in the nearest river bed. Ethiopia

A well next to a dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Women fetching water early in the morning. The wells in this area are empty during the dry season,forcing women to walk very long distance to fetch water in the nearest river bed. Ethiopia

A dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Trekkers pass a dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Women fetching water early in the morning. The wells in this area are empty during the dry season,forcing women to walk very long distance to fetch water in the nearest river bed. Ethiopia

TANZANIA Watatulu tribes collecting water from a dry river bed in Miyuguyu, Shinyanga. photograph by Sean Sprague

A well next to a dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Water, tanzania taking water from a dirty hole in a dry river bed, shinyanga

Trekkers cross a dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Plantations and dry river bed in the Todra Gorge near Tinehir in the High Atlas mountains of Morocco

A pool in a river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

The dry bed of the Kidepo river in Kidepo Valley National Park in northern Uganda.

Trekkers cross a dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

A dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Plantations and dry river bed in the Todra Gorge near Tinehir in the High Atlas mountains of Morocco

TANZANIA Watatulu tribes collecting water from a dry river bed in Miyuguyu, Shinyanga. photograph by Sean Sprague

A dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

A dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

A dried up river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

A pool in a river bed in the Anti Atlas mountains of Morocco, North Africa, Africa

Monsoon clouds over almost dry bed of river Mayurakshi, West Bengal, India

Alluvial Fan, China

Springbok (Antidorcas marsupialis) . During a sandstorm in the dry bed of the Nossob river. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Vacationers along Medano Creek in Great Sand Dunes National Park, Mosca, Colorado, USA

Dry river bed, detail

Springbok (Antidorcas marsupialis) . In the dry bed of the Nossob river. During the rainy season with thunderstorm and lightning. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Springbok (Antidorcas marsupialis) . In the dry bed of the Nossob river. During the rainy season with thunderstorm and lightning. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Erosion of a river bed, volcanic region of Mount Ruapehu, Tongariro National Park, UNESCO World Heritage Site, near Waiouru, North Island, New Zealand

Cape buffalo, black buffalo, African buffalo (Syncerus caffer), herd, in dry riverbed, foraging, Kruger National Park, South Africa, Africa

Red Jeep in a river bed near the Eyjafjallajoekull glacier, Borsmoerk, Iceland, Europe

Dried and cracked mud along the Rio Grande, Big Bend National Park, Texas, USA

Cargo ships on the Rhine river at low water, river bed, Mt. Drachenfels, between Mehlem and Rolandswerth, North Rhine-Westphalia, Germany, Europe

Structures in a dry river bed, Monument Valley, Arizona, USA

Large Wadi, Oued with acacia tree, Tadrart, Tassili n'Ajjer National Park, Unesco World Heritage Site, Algeria, Sahara, North Africa

Dry Isar riverbed, Sylvenstein, Upper Bavaria, Germany, Europe

Dried out river channel, Utah, USA, North America

View of the Rhine river at low water level, photomontage, Cologne, North Rhine-Westphalia, Germany, Europe, PublicGround

Excursion ship of the KD on the Rhine river at low water, river bed, Mt. Drachenfels, between Mehlem and Rolandswerth, North Rhine-Westphalia, Germany, Europe

Person On Top Of Rocky Peak

An elephant mother and calf, Loxodonta africana, walk across a dry river bed in black and white , Londolozi Game Reserve, Sabi Sands, Greater Kruger National Park, South Africa

Clay loaded with iron oxides and dried out, Rio Tinto, Andalusia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.

African Elephant (Loxodonta africana). So-called desert elephant. Cow in the dry bed of the Ugab river. Damaraland, Namibia.

Springbok (Antidorcas marsupialis). During a sandstorm in the dry bed of the Nossob river. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa.