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.