Moon Embracing Pavilion and Suocui Bridge at Black Dragon Pool in Jade Spring Park, Lijiang, Yunnan, China, Asia

Moon Embracing Pavilion and Suocui Bridge at Black Dragon Pool in Jade Spring Park, Lijiang, Yunnan, China, Asia

Run off area near Black Pool Spring, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Black Dragon Pool with Moon Embracing Pagoda and Suocui Bridge in Jade Spring Park of Lijiang, Yunnan, China, Asia

Jade Spring Park and Black Dragon Pool with boat carrying wicker baskets, and Moon Embracing Pavilion, Lijiang, Yunnan, China, Asia

Young woman photographed, dead trees at Opalescent Pool with mineral deposits, Black Sand Basin, Yellowstone National Park, Wyoming, USA, North America

Steaming hot spring with turquoise water in the morning sun, Black Pool, West Thumb Geyser Basin, Yellowstone National Park, Wyoming, USA, North America

Steaming hot spring with turquoise water in the morning sun, Black Pool, West Thumb Geyser Basin, Yellowstone National Park, Wyoming, USA, North America

Turquoise clear water of a hot spring, Sapphire Pool, Black Sand Basin and Biscuit Basin, Yellowstone National Park, Wyoming, USA, North America

Dead trees at Opalescent Pool with mineral deposits, Black Sand Basin, Yellowstone National Park, Wyoming, USA, North America

Black Opal Pool, Hot Spring, Yellow Algae and Mineral Deposits, Biscuit Basin, Yellowstone National Park, Wyoming, USA, North America

Turquoise clear water of a hot spring, Sapphire Pool, Black Sand Basin and Biscuit Basin, Yellowstone National Park, Wyoming, USA, North America

Opalescent Pool, geyser, drainage area with coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

Detailed view of the Black Pool, West Thumb Geyser Basin, Yellowstone Lake, Yellowstone National Park, Teton County, Wyoming, USA

Emerald Pool, geyser, drainage area with a boardwalk, coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

Emerald Pool Geyser, drainage area, colored thermophilic bacteria, microorganisms, geothermal sources, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

Emerald Pool, geyser, drainage area with a boardwalk, coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

Emerald Pool, geyser, drainage area with a boardwalk, coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

Emerald Pool, geyser, outlet area, colourful thermophilic bacteria, microorganisms, boardwalk, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

Black Opal Pool in Biscuit Basin, Yellowstone National Park, Wyoming.