In Montana, this dramatic alpine lake formed by an earthquake offers mountain views, fishing spots, and geological history ...

Spring national park visits offer the perfect combination of comfortable weather, blooming wildflowers and smaller crowds before peak summer season.

Nothing feels more rejuvenating after a strenuous hike than a long soak in a natural hot spring. Luckily, there are places in ...

Hawaii's Kilauea volcano is shooting lava fountains up to 1,000 feet, and falling ash and volcanic fragments are forcing ...

Echinus Geyser, dormant since 2017, is once again sending water up to 30 feet into the air.

Yellowstone's Largest Acidic Geyser Wakes Up After Six Years, Blasting Water 30 Feet High ...

A long-dormant Yellowstone geyser – the largest acidic geyser in the world – recently started erupting again. (MA Bellingham via USGS) ...

A breathtaking astronaut photo reveals El Salvador’s Lake Coatepeque—an ancient volcanic crater lake that sometimes ...