A little-known volcano on a remote Pacific island may have been the source of one of the 19th century’s most powerful ...

The city of Flagstaff has taken big steps to preserve the clarity of its night sky. Find out the best ways to experience the ...

We now know that Beacon Rock was a cinder cone volcano that grew here inside of the gorge 57,000 years ago during the Ice Age. And yet, when you climb to the top of Beacon Rock, there are no ...

A new study has found surprising evidence of large bodies of magma lurking beneath long-dormant volcanoes in the Cascade ...

Mount Tabor is a dormant volcanic cinder cone located 5 miles east of downtown Portland. It may sound like a trek, but the scenery is well worth it. At its summit, Mount Tabor provides vistas of ...

The new Sáttítla Highlands National Monument encompasses volcanic terrain, including cinder cones—steep, conical hills made of solidified lava—and lava tubes—tunnels created by ancient ...

Rescuers helped an injured hiker and their climbing partner off Black Butte's treacherously icy trail. What makes Mt.

Flaxen grasses dust black and red volcanic gravel ... in the distance, a smaller cinder cone — the Roden Crater — that would come to occupy most of his life. “Quite a view,” he says.

The summit eruption at Kīlauea volcano that began on Dec. 23 ... Pu‘u Pua‘i, the large cinder cone in the lower right of the image, was formed by lava fountains that reached 580 meters ...

Among its most striking features are the Painted Dunes, multicolored pumice fields formed by the oxidation of volcanic ash from eruptions. These colorful dunes, visible from the top of the ...