Black Hills, South Dakota

The Eiger, Switzerland

Hill fortress of Sigiriya, Sri Lanka

Yosemite Highlands in July

Sunrise at Lake Martin, Al -

Jaghori, Afghanistan

Iliamna Volcano, Alaska. Photo by Michael Melford

Unknown Place, Snowy Mountains

Mammoth Hot Springs, Yellowstone National Park

Ancient Bristlecone Pine forest on White Peak

Purnululu National Park, Australia

Grand Teton Range

Canyon from central Turkey near Göreme.