A Hawaiian volcano looks like a scene from Lord of the Rings as it spews lava this week. A United States Geological Survey ...

By Dean Murray A Hawaiian volcano looks like a scene from "The Lord of the Rings" as it spews lava this week. A United States ...

This is a spectacular high-Sun view of the Mare Tranquillitatis pit crater revealing boulders on an otherwise smooth floor. This image from LRO's Narrow Angle Camera is 400 meters (1,312 feet ...

Protected from the harsh surface of Mars, such pits are believed to be good candidates to contain Martian life, making them prime targets for possible future spacecraft, robots and even human ...

To prevent repeated breakthroughs of rock and water into the mine crater, mine rescuers are erecting water-proof cofferdams, monitoring the pit crater, accounting for incoming water and rock.

The Kilauea volcano in the Hawaii Volcanoes National Park has erupted for the seventh time since December last year, spewing lava from the Halemaʻumaʻu pit crater. Spectacular timelapse footage from ...

By Dean Murray A Hawaiian volcano looks like a scene from "The Lord of the Rings" as it spews lava this week. A United States ...

The Kilauea volcano in the Hawaii Volcanoes National Park has erupted for the seventh time since December last year, spewing lava from the Halemaʻumaʻu pit crater. Spectacular timelapse footage ...

A United States Geological Survey (USGS) live camera captured the ongoing activity at Kīlauea volcano and its prominent pit crater Halemaʻumaʻu, located within the larger Kīlauea ...