The Savonoski Crater is a round hole in Alaska's Katmai National Park that has defied scientific explanation ever since it was discovered.

Satellites have detected large volumes of methane spewing from Mount Fentale’s crater following months of earthquakes that ...

Thousands are flocking to Mount Etna’s slopes, but only an expert guide can make sure you visit safely. View on euronews ...

Alaska, largely unspoiled wilderness, looks like something out of The Lord of the Rings.