Asmaløy is an island in Hvaler

Hvaler

Hvaler is a municipality that is a group of islands in the southwestern part of Østfold county, Norway. The administrative centre of the municipality is the village of Skjærhalden, on the island of Kirkeøy. The only police station in the municipality is located in Skjærhalden...

 municipality of Østfold county, Norway.

Asmaløy is one of the larger islands in the archipelago of Hvaler which consists of over 800 islands, islets, skerries and reefs located in the outer Oslofjord

Oslofjord

The Oslofjord is a bay in the south-east of Norway, stretching from an imaginary line between the Torbjørnskjær and Færder lighthouses and down to Langesund in the south to Oslo in the north....

. Hvaler tunnel (Hvalertunnelen) joins Asmaløy with Kirkeøy, the largest island in the municipality and the site of the administrative centre at Skjærhalden

Skjærhalden

Skjærhalden is the administrative centre of Hvaler municipality, Norway. It is located on the island Kirkeøy. Its population is 642....

. Hvaler tunnel is an underwater tunnel on Highway 108 (Rv108). The tunnel goes under the strait between Asmaløy and Kirkeøy. The 3,751 meter long tunnel was opened on 2 October 1989. Hvaler tunnel is closed to pedestrians and cyclists.

The author Johan Borgen

Johan Borgen

Johan Collett Müller Borgen was a Norwegian author, journalist and critic. He was married to Annemarta Borgen. Under the pseudonym of Mumle Gåsegg he wrote shorter articles in the newspaper Dagbladet, particularly during World War II...

lived on Asmaløy for many years at a site known as "Knatten".