Hide Caption 9 of 9Hikers are being told to keep at least two kilometers away from the crater's center. Hide Caption 6 of 9 9 photos: Otherworldly travel destinations here on Earth Fogo Island, Cape Verde – Fogo Island is more or less one big volcano. 9 photos: Otherworldly travel destinations here on Earth Charamel, Mauritius – The colorful sand dunes in Charamel, Mauritius, are one of several places on Earth that resemble alien worlds. Ruapehu due to "volcanic unrest"Tongariro National Park, where the volcano is located, is safe to visit(CNN) Hikers in New Zealand are being urged stay away from the crater lake of a volcano featured in the "Lord of the Rings" trilogy because of increased activity. GNS Science has raised the volcanic alert level of Mount Ruapehu to Level Two, which stands for "moderate to heightened volcanic unrest."

Source: CNN May 12, 2016 00:07 UTC