Aside from drawing more tourists, not much has changed at South Dakota ’s above-ground attractions such as Badlands National ...

For centuries, humans have lived underground. Today, that ancient practice is under dire threat—even as cave life makes more sense than ever. Gabriele Gouellain waits in the kitchen of her ...

Iceland's Katla Ice Cave is a remarkable work of nature. Sculpted over thousands of years of glacial floods, icy blizzards, and volcanic eruptions, the cave sits inside the Kötlujökull glacier on top ...

When it comes to worthwhile outdoor attractions, glaciers are usually regarded as inaccessible to only the most experienced and daring adventurers. After all, most people only think of massive glacier ...