Mariner 9, the first spacecraft to orbit another planet, arrived at Mars on Nov. 14, 1971, and returned remarkable images of the surface. This shield volcano on the Red Planet's surface reveals a ...

Mauna Loa in Hawaii has long reigned at the world's largest shield volcano, but it might need to acknowledge a new champion in that category.

The Newberry Volcano, sitting a few dozen miles from the mid-sized town of Bend, Oregon, is a four-thousand-foot high shield volcano that “ has as many as 400 volcanic vents scattered across its ...

Deep below the Earth's surface, magma is churning and flowing into the Axial Seamount, an underwater shield volcano about 300 miles off the coast of Oregon. As the volcano grows and tremors ...