'Bergkrystallen' is the end station on
Lambertseterbanen, after
Munkelia, of the
Oslo T-bane system. 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 Lambertseterbanen to
Mortensrud, but
Østensjøbanen was extended instead.