Field Trip

The limestone landscape of Ireland's Burren is far from barren, with 700 species of flora

Exploring one of the longest and deepest slot canyons in the world

Shaped by ancient ice and the lash of wind and water, the Koster Islands' landscape is geologically distinct from that of mainland Sweden

750-foot-high Star Dune is North America's tallest

The Tara's flow has carved a gorge second in depth only to the Grand Canyon, and nearly its equal in beauty.

Seen through a shroud of mist, the limestone pillars of Ha Long Bay could be the skyscrapers of Wall Street

This lake, called Jökulsárlón, did not exist 75 years ago, when the giant Breidamerkurjökull glacier began receding

Smallmouth swim along the ancient stone bones of the Ozarks

Punta Tombo, Argentina

Be like a bear