Haraldssund is connected by a causeway to the neighbouring island of Borðoy to the east of Kunoy.

Nowadays the 504 bus runs a regular service across the causeway, with a route from Klaksvík through Ánir then across to Haraldssund and through the tunnel to Kunoy.

[1] A third settlement, Skarð, was the site of a fishing accident on Christmas Eve, 1913 which killed seven men (all the male population except a 14-year-old and a 70-year-old).

The coastline of the northern tip of the island has been identified as an Important Bird Area by BirdLife International because of its significance as a breeding site for seabirds, especially European storm petrels (250 pairs) and black guillemots (200 pairs).

[2] The brown rat, was introduced on purpose by people from Klaksvík, to the island in 1914 over some slight,[3] and it has done tremendous damage to the bird population since then, most notably the Atlantic puffin.