Bergkrystallen is the end station on the Lambertseter Line, after Munkelia, of the Oslo Metro. It is located in the Nordstrand borough. Bergkrystallen is a road just north of the station. The area is mainly residential. Originally it was planned to extend the Lambertseter Line to Mortensrud, but the Østensjø Line was extended instead. The station is served by Line 4. The building of more residential apartments on the station has met local resistance. In 2007, a proposal was made to build some terraced housing and a kindergarten on the station.