Young woman takes photographs as her friend hangs onto handrail to avoid slipping on the steps in snowy Tromso, Norway

Young woman takes photographs as her friend hangs onto handrail to avoid slipping on the steps in snowy Tromso, Norway

Young woman avoiding deep snow to reach park bench in snowy Tromso, Norway

Young couple sitting on park bench in deep snow in Tromso, Norway

Man chippping woold, campfire in foreground, Sacra Valley, Province of Trento, Trentino-Alto Adige/Südtirol, Italy

Unrecognizable woman in big hat with sexy slim body relaxing on the swimming pool. Top view

Blue Lagoon geothermal spa, Iceland, Europe

Hot springs with Flamingos (Phoenicopteriformes, Phoenicopteridae) in the steaming water, Uyuni, Bolivia, South America

Tourists at Firehole River, Yellowstone National Park, Wyoming, USA

Blue Lagoon geothermal spa, Iceland, Europe

Blue Lagoon geothermal spa, Iceland, Europe

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

Blue Lagoon geothermal spa, Iceland, Europe

Colored thermophilic bacteria, outlet of the Cliff Geyser, Firehole River, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA