Watch: A year after Yellowstone National Park's unexpected explosion, another one takes place at Black Diamond Pool.

If you're looking for the most breathtaking views in the Southwest, look no further than this overlooked part of New Mexico ...

The same geyser that erupted last summer in a hydrothermal explosion in Yellowstone National Park was recorded erupting again, video shows.

A Wyoming attraction takes the No.1 spot. Named for its white calcite crystals, Calcite Springs Overlook is one of many ...

Continuous infrasound (low-frequency acoustic energy) monitoring is now established in Yellowstone. And the method is ...

A webcam captured a small eruption at Yellowstone National Park's Biscuit Basin, one year after a larger, more dangerous explosion in the same area.

Mount Etna has again captivated the world with a spectacular show. The volcano that towers over eastern Sicily spewing smoke ...

Running Down That Hill A terrifying video that's making its rounds on social media shows dozens of tourists fleeing a massive ...

The Black Diamond Pool, in Yellowstone's Biscuit Basin, blew up on Saturday evening. The area has been closed to the public ...

Tourists on an expedition near Mount Etna were filmed running for safety after a massive ash plume erupted from the volcano on Monday.

Beautiful views and exciting activities aren't just for the parks. These accommodations also have their own charms.