These famous rock formations are the result of volcanic eruptions 6 to 7 million years ago that blanketed the land in 1,000 feet of earthen debris. The rocks look like perfect tents—some ...

Slide through billion-year-old volcanic chutes, swim in turquoise pools, and camp under the stars at arguably Missouri's ...

Volcanic formations yield trove of animal fossils. Traci Watson. Special for USA TODAY. ... terrifying rivers of volcanic gas and bits of rock that usually travel at 50 mph or faster, ...

Could a volcanic eruption be the key to unlocking the mysterious geological history of Mars? Back in the 1960s, NASA's Mariner spacecraft discovered an extremely large and unusually soft rock ...

Earth's continents may look fixed on a globe, but they've been drifting, splitting and reforming over billions of years—and ...

But now, new research seems to answer that question -- and maybe many others. More than 3 billion years ago, extreme volcanic eruptions on Mars dropped the huge deposit near the Martian equator ...

Changes in the composition of magma may have caused variations in the Panama Canal volcanic rock formations, according to a study published May 10, 2017 in the open-access journal PLOS ONE by ...

Fort Rock itself, however, is a state park site that allows visitors to hike up to and around the volcanic site. Easy paths lead through the desert dust, past sagebrush and the occasional juniper ...

A mysterious rock formation on Mars, which has perplexed scientists for decades, was likely formed as a result of a series of explosive volcanic eruptions more than 3 billion years ago.

Along the eastern shore of Hudson Bay in Canada's northeastern province of Quebec, near the Inuit municipality of Inukjuak, resides a belt of volcanic rock that displays a blend of dark and light ...

Changes in the composition of magma may have caused variations in the Panama Canal volcanic rock formations, according to a study published May 10, 2017 in the open-access journal PLOS ONE by ...