Hawaii's Kilauea volcano produces significant volcanic gas during the latest eruption. Officials are monitoring air quality as crowds flock to witness the activity.

Mount Etna is Europe’s most active volcano and the continent’s largest. It attracts hikers and backpackers to its slopes, ...

The chief volcanologist Teresito Bacolcol said it is too early to tell if Mayon’s restiveness would lead to a major and ...

An earthquake swarm 35 miles (55 kilometers) beneath Kilauea in August 1959 was followed in October by ground swelling ...

A long quiet volcano in Ethiopia has roared back to life, blasting ash roughly 9 miles into the sky and catching both nearby ...

Kīlauea summit region shook for 5 hours Nov. 14 that year as magma made a path to the surface. The eruption began at 8:08 p.m ...

In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world's most active and whose eruption could affect millions of people. Its mission: figure ...

All that volcanic activity means natural hot springs are prevalent within and outside the park. Two favorites include Tabacón ...