Tolkien's The Hobbit takes place 60 years before the start of the tale told in The Lord of the Rings.
The story is about the adventure of the hobbit Bilbo Baggins who goes in search of treasure with 13 dwarfs.
The scene shot along the Aratiatia rapids is part of an escape where Bilbo Baggins rescues the dwarfs from elves by hiding them in barrels which float downstream.
The rapids, about 10km north of Taupo, are operated by Mighty River Power.
The Hobbit: An Unexpected Journey is set to premiere in December and the second film, The Hobbit: There and Back Again, next December.