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A New Zealand volcano that featured as Mount Doom in "The Lord of the Rings" movies is in danger of erupting as pressure builds in a subterranean vent, officials have said. The Department of Conservation (DOC) warned hikers to avoid the summit of Mount Ruapehu, saying that temperature readings by scientists indicated there was an increased risk of eruption at New Zealand's largest active volcano. "The current situation can't continue, Ruapehu is so active that the temperatures have been going up and down a lot," DOC volcanic risk manager Harry Keys told Radio New Zealand... Official monitoring body GNS Science...

I don't think this geological feature was in "The Lord of the Rings" trilogy, even though it's near Mt. Ruapehu, which was in the movie. The waterfall is in Tongariro National Park, which features Ruapehu, Tongariro, and Ngauruhoe volcanoes. It's central North Island, in the Taupo volcanic zone, also near the Rotorua hydrothermal area. I'll be absent next week, so I have two pictures today.