The Trollfjord (Trollfjorden) is a 2 km long sidearm of the Raftsund (Lofoten). The name is derived from troll, a figure from Norse mythology. Fjords are long, with a narrow entrances and have steep-sided mountains. They are created by glacial erosion.
The mountains surrounding Trollfjord are between 600 and 1100 metres high. The Trollfjord is 72 metres at its deepest point.