The volcanic activity that began building Haleakala occurred about 2 million years ago. Haleakala is listed as a moderate threat volcano, and scientists say it’s not a matter of if but when ...

But the first three years of the Pu‘u‘o‘o eruption were characterized by 44 lava fountaining episodes that built a prominent cinder- and spatter-cone standing 835 feet (255 meters ...

Eruptions of steam, ash ... If you can stay longer, climb Cinder Cone, an outstanding example of the results of volcanism, and, if you have the stamina for a more demanding trek, try Lassen ...

One of only four green sand beaches in the world, Papakolea sits at the southern tip of Hawaii’s Big Island. The ...

For 25 million years, volcanos spewed molten rock and ash across New Mexico, forming craters, super volcanos, cinder cones, lava flows and peak-less mountains. Over time, these massive eruptions ...

Ash released from shield volcanoes often builds up around the vent forming a steep, round hill known as a cinder cone. A lava tube may also form, beneath the surface of the ground, when low ...