Alaska, largely unspoiled wilderness, looks like something out of The Lord of the Rings.

The striking Kawah Ijen volcano in Indonesia is known for emitting what appears to be blue lava as soon as the sun sets.

Mount Spurr in Alaska – rising some 3,370 meters or 11,070 feet above sea level  – could be about to erupt, with the number ...

Sierra Negra Volcano stands majestically over Isabela Island, rising nearly 3,700 feet high. Admirers far and wide are drawn to Sierra Negra to peer into its glowing fumaroles and expansive ...