Grand Canyon National Park, Arizona
One of the highest lakes in the world, Gurudongmar Lake, Sikkim, India
One of the most astonishingly mind-blowing geological wonders on earth – Cueva de los Cristales in northern Mexico.
Three divers swim through the water-filled passages below the island of Bermuda
Entrance to Sintersee underground lake, Tropfsteinhlen Cave, Austria.
Flying over Angel Falls in Canaima National Park, Venezuela
Ketil tower guarding Tasermiut Fjord in Nanortalik, Greenland
Exploring the underwater caves of the Red Sea, Egypt