The sky in the ground. Yellowstone National Park

Five Fingers Strand, Co. Donegal, Ireland

Bimmah Sinkhole, Oman

Tapuaetai

Ruins of Whitby Abbey Monastery. North Yorkshire, England

Admirable rock formations in Varna, Bulgaria.

Mount Säntis, Switzerland

The Fairy Pools on the Isle of Skye, Scotland

Yamdrok-tso Lake, Tibet.

Bagan sunset, Myanmar

Cadlao Island, Philippines -

Athabasca Glacier at night, Jasper National Park

Kings Canyon National Park, California