CORRECTION: This infographic was updated on July 27, 2018, to correct the relative viscosities of pahoehoe and aa lava flows. Pahoehoe lava flows do not have higher viscosity than aa lava flows.

The landscape is stark, dark and dramatic, formed by a series of eruptions in the last 16,000 years that have stacked layer ...

NASA has captured satellite images of hot lava from Iceland's recent volcanic eruption. The eruption, which began on November 20, has led to lava flows reaching the Blue Lagoon spa and the town of ...