Digerudgrunnen Lighthouse ( no, Digerudgrunnen fyr) was a

coastal lighthouse A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark ...

in the inner

Oslofjord The Oslofjord (, ; en, Oslo Fjord) is an inlet in the south-east of Norway, stretching from an imaginary line between the and lighthouses and down to in the south to Oslo in the north. It is part of the Skagerrak strait, connecting the Nor ...

, in the municipality of

Frogn Frogn is a municipality in former Akershus now Viken county, Norway. It is part of the Follo traditional region. The administrative centre of the municipality is the town of Drøbak. Frogn was established as a municipality on 1 January 1838 (s ...

Viken, Norway Viken (Old Norse: Vík or Víkin), or Vika, was the historical name during the Viking Age and the High Middle Ages for an area of Scandinavia that originally surrounded the Oslofjord and included the coast of Bohuslän. Its definition changed over ...

. It was established in 1871, and closed in 1975. The lighthouse is demolished.

References

Lighthouses completed in 1871 Lighthouses in Viken 1871 establishments in Norway 1975 disestablishments in Norway {{Norway-struct-stub