Tags: Lighthouse, Tower.
Grinna Lighthouse (Norwegian: Grinna fyr) is a coastal lighthouse in the municipality of Vikna in Nord-Trøndelag Norway. It was established in 1904 and automated in 1987. Grinna lighthouse stands on the islet of Grinna in the South Gjæslingan island group on the north side of the Foldafjord. The 19-metre (62 ft) high red tower emits a light every six seconds. The white occulting light flashes every six seconds and it can be seen for about 12.5 nautical miles (23.2 km; 14.4 mi).