These triangular, three-sided pyramids stood out amid steep-sided volcanic cones and impact craters ... a rugged, flat-topped plateau in the planet's eastern hemisphere, an odd-shaped formation caught ...

Located a few hours by bus from Salvador, in the state of Bahia, it consists of a plateau as large as Switzerland ... the mineral deposits of Artist’s Palette were formed by the action of volcanic ...

As glaciers melt around the world, long-dormant volcanoes may be waking up beneath the ice. New research reveals that massive ...