Young girl admiring the Waterfall of Gour Saillant fed by the Auzelle, a sub-tributary of the Sioule River, Saint-Priest-des-Champs, Puy-de-Dome department, Auvergne-Rhone-Alpes region, France, Europe

Man admiring the waterfall of Gour Saillant fed by the Auzelle, a sub-tributary of the Sioule River, Saint-Priest-des-Champs, Puy-de-Dome department, Auvergne-Rhone-Alpes region, France, Europe

Father and his daughter admiring the waterfall of Gour Saillant fed by the Auzelle, a sub-tributary of the Sioule River, Saint-Priest-des-Champs, Puy-de-Dome department, Auvergne-Rhone-Alpes region, France, Europe

Young girl admiring the Waterfall of Gour Saillant fed by the Auzelle, a sub-tributary of the Sioule River, Saint-Priest-des-Champs, Puy-de-Dome department, Auvergne-Rhone-Alpes region, France, Europe

A cave explorer stands on rimstone formations in Hang Son Doong, Vietnam.

Hang Son Doong, located in Phong Nha Ke Bang National Park, Vietnam, is home to a high quantity of rare cave pearls.

A female cave explorer looks into a very pretty Gour Pool. The floor of which is covered with 'dog tooth' crystals. The edges of

A female cave explorer looks into a crystal clear Gour Pool surrounded by delicate Stalactite formations.

A female cave explorer wades through the terminal Gour Pool so very close to the surface at the most remote part of Whiterock (c

Cave explorer admires pretty Gour Pool at the most remote part of the system in Whiterock (Cave).