Lake Sevan, early morning, freshwater high-altitude lake, Gegharkunik Province, Armenia, Caucasus, Asia

Lake Sevan, early morning, freshwater high-altitude lake, Gegharkunik Province, Armenia, Caucasus, Asia

Perito Moreno National Park (Parque Nacional Perito Moreno) high altitude lake, Santa Cruz Province, Argentinian Patagonia, Argentina, South America

Tranquil evening at a high-altitude Kol-Ukok lake surrounded by majestic mountains in Kyrgyzstan, Central Asia, Asia

Tranquil evening at a high-altitude Kol-Ukok lake surrounded by majestic mountains in Kyrgyzstan, Central Asia, Asia

Aerial of Kigoma, on Lake Tanganyika, Tanzania, East Africa, Africa

Kel-Suu lake, high altitude lake, Kurumduk valley, Naryn province, Kyrgyzstan, Central Asia, Asia

A mountain rescue team member abseiling in the snow above Kirkstone near Ambleside in the Lake District, Cumbria, England, United Kingdom, Europe

A mountain rescue team member abseiling in the snow above Kirkstone near Ambleside in the Lake District, Cumbria, England, United Kingdom, Europe

A mountain rescue team member abseiling in the snow above Kirkstone near Ambleside in the Lake District, Cumbria, England, United Kingdom, Europe

A mountain rescue team member abseiling in the snow above Kirkstone near Ambleside in the Lake District, Cumbria, England, United Kingdom, Europe

Trig Point on the summit of Red Screes in the Lake District, Cumbria, England, United Kingdom, Europe

A mountain rescue team member abseiling in the snow above Kirkstone near Ambleside in the Lake District, Cumbria, England, United Kingdom, Europe

A mountain rescue team member abseiling in the snow above Kirkstone near Ambleside in the Lake District, Cumbria, England, United Kingdom, Europe

A mountain rescue team member abseiling in the snow above Kirkstone near Ambleside in the Lake District, Cumbria, England, United Kingdom, Europe

A tarn on the summit of Red Screes in the Lake District National Park, Cumbria, England, United Kingdom, Europe

Early morning mood after sunrise looking over Seealp Lake, at 1143 m altitude, towards Rossmad Mountain, 2103 meters high, right behind, Saentis Mountain, to the left, Altmann Mountain, Canton of Appenzell Inner-Rhodes, Switzerland, Europe

View from Seealp Lake, at 1143 m altitude, over the Seealp Mountains in autumn towards Rossmad Mountain, 2103 meters high, right behind, Saentis Mountain, to the left, Altmann Mountain, Canton of Appenzell Inner-Rhodes, Switzerland, Europe

View from Seealp Lake, at 1143 m altitude, over the Seealp Mountains in autumn towards Rossmad Mountain, 2103 meters high, right behind, Saentis Mountain, to the left, Altmann Mountain, Canton of Appenzell Inner-Rhodes, Switzerland, Europe

Tourist posing for a photo against the background of the beautiful Lago di Sorapis lake in the Italian Dolomites, Dolomites, Italy, Europe

Beautiful Turquoise Lago di Sorapis Lake with Dolomites Mountains, Italy, Dolomites, Italy, Europe

Early morning mood after sunrise looking over Seealp Lake, at 1143 m altitude, towards Rossmad Mountain, 2103 meters high, right behind, Saentis Mountain, to the left, Altmann Mountain, Canton of Appenzell Inner-Rhodes, Switzerland, Europe

Early morning mood before sunrise looking over Seealp Lake, at 1143 m altitude, towards Rossmad Mountain, 2103 meters high, right behind, Saentis Mountain, to the left, Altmann Mountain, Canton of Appenzell Inner-Rhodes, Switzerland, Europe

Tazang Tso, a high altitude salt lake, Changthang, Ladakh, Indian Himalayas, Jammu and Kashmir, northern India, India, Asia

View from Seealp Lake, at 1143 m altitude, over the Seealp Mountains in autumn towards Rossmad Mountain, 2103 meters high, right behind, Saentis Mountain, Canton of Appenzell Inner-Rhodes, Switzerland, Europe

Early morning mood after sunrise looking over Seealp Lake, at 1143 m altitude, towards Rossmad Mountain, 2103 meters high, right behind, Saentis Mountain, Canton of Appenzell Inner-Rhodes, Switzerland, Europe

A stream leads the eye towards a high altitude lake. A volcano and snow-capped mountains in the distance are lit by the sunrise against a pure blue sky, Mendoza, Argentina

Gravel road leads to a high altitude laguna in the middle of a colourful South American landscape in the Andes, Eduardo Avaroa Andean Fauna National Reserve; Potosi, Sur Lipez, Bolivia

High altitude laguna in the Andes; San Pedro de Atacama, Atacama, Chile