[2] Ytre Hvaler is mostly a marine park, covering the outer parts of the skerries of the east shore of Oslofjord.

The park is dominated by the coastal culture which has used the area for centuries, resulting in it including boathouses for fishing.

There are more than 50 shipwrecks in the park, the most prominent being the Danish frigate HDMS Lossen which was lost during the Christmas Flood of 1717.

[4] Within the park are two lighthouses: Torbjørnskjær and Homlungen, both of which are operated by the Norwegian Coastal Administration.

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