Raufarhólshellir
At 1,360 meters (4,462 feet) the Lava Tunnel is the fourth-longest lava cave discovered in Iceland. The cave is remarkably spacious—from 10 to 30 meters (33 to 98½ feet) wide and up to 10 meters (33 feet) tall—making it quite easy and accessible for most people. Walking along the lava's 5,200-year-old path is a humbling experience in itself, and the views of the geological formations and spectacular colors are extraordinary. In winter, big crystal-like ice sculptures form inside the cave entrance. The standard Lava Tunnel tour takes about an hour.
