Mud Volcano Area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Greenland Lake reduced to a mud hole, Grand Canyon North Rim, UNESCO, Arizona, United States of America

African Elephant drinks from muddy watering hole, South Luangwa National Park, Zambia, Africa

Greenland Lake reduced to a mud hole, Grand Canyon North Rim, UNESCO, Arizona, United States of America

Steaming volcanic mud pools, Rincon de la Vieja National Park at foot of Rincon Volcano, Gaunacaste, Costa Rica

Smoke hole and doorway in Navaho (Navajo) dwelling of mud covered pinyon pine logs, Arizona, United States of America (U.S.A.), North America

A farmer's watering hole, almost dried up, on a farm near Shepperton, Victoria, Australia, Pacific

A farmers watering hole, almost dried up, on a farm near Shepperton, Victoria, Australia, Pacific

A farmers watering hole, almost dried up, on a farm near Shepperton, Victoria, Australia, Pacific

A farmers watering hole, totally dried up, on a farm near Shepperton, Victoria, Australia, Pacific

A farmers watering hole, almost dried up, on a farm near Shepperton, Victoria, Australia, Pacific

A farmers watering hole, almost dried up, on a farm near Shepperton, Victoria, Australia, Pacific

A farmers watering hole, almost dried up, on a farm near Shepperton, Victoria, Australia, Pacific

A farmers watering hole, almost dried up, on a farm near Shepperton, Victoria, Australia, Pacific

A farmers watering hole, almost dried up, on a farm near Shepperton, Victoria, Australia, Pacific

Cracked mud in a dried up water hole, Painted Desert, Hopi Reservation, Navajo Nation Reservation, Arizona, Southwest, United States of America, USA, North America

Brown hyena (Hyaena brunnea) at waterhole after mud bath, Kgalagadi Transfrontier Park, Northern Cape, South Africa, Africa

Solfataras, fumaroles, mud pots, sulfur and other minerals, a woman on the viewing platform at the back, high-temperature geothermal area or Hverarond or Hverir, Namafjall mountains, Myvatn area, Norourland eystra, Iceland, Europe

Cracked mud in a dried up water hole, Painted Desert, Hopi Reservation, Navajo Nation Reservation, Arizona, Southwest, United States of America, USA, North America

African elephant (Loxodonta africana) female having fun at waterhole, Etosha National Park, Namibia, Africa

African elephant (Loxodonta africana) female having fun at waterhole, Etosha National Park, Namibia, Africa

A Little owl (Athena noctua) peers from a hole in the mud wall of an old fort, in the town of Gurian, Herat Province

Water Buffalo Covered In Mud From A Bath In A Watering Hole At The Serengeti Plains, Tanzania