In the process, the dome can plug up the conduit that is letting lava and volcanic gases escape. The lava dome (centre, darker grey/brown) at Sheveluch seen before the April 10-11 eruption. Credit: ...

Days of heavy rain had gradually eroded Semeru’s lava dome, a mound of hardened lava that acts like a volcano’s plug, which partially collapsed.

A flurry of seismic activity that caused 160 quakes in just two hours at the Laguna del Maule volcanic field in central Chile has put authorities on alert. 160 quakes occurred in the area during a ...

Members of a conservation group scouting land to buy were surprised to learn this year that dome-shaped hills on Mount Diablo’s eastern flanks are volcanic — the result of magma rushing ...

Lassen Volcanic National Park, about three hours from Reno in Northern California, was named a hidden gem among U.S. national parks, according to a recent report by HomeToGo.

The Best Itinerary for 2 Days in Lassen Volcanic National Park This short itinerary will give you a great getaway experience in Lassen, and leave you wanting more!

Volcanic plugs are formed when molten magma solidifies in the pipe or neck of an active volcano. Over time the agents of erosion wear the softer surrounding sediments of the volcanic cone away.

Lassen Volcanic National Park, about three hours from Reno in Northern California, was named a hidden gem among U.S. national parks, according to a recent report by HomeToGo. The vacation rentals ...

The largest tremor registered during the swarm was 2.1 in magnitude but the relatively young volcanic field has shown several signs of activity in recent years.

Big Southern Butte is one of the largest rhyolite domes in the world. Along with its neighboring siblings, it stands in sharp contrast to the surrounding basalt on Idaho's Eastern ...

When the magma finds a channel that leads to the volcano's surface, it builds up a sticky, hot, gas-rich plug known as a volcanic dome which can violently explode.