The society also arranges a medieval market close to the church in Gammelgarn, harvests in some meadows, excursions and festivals during summer and winter. This harbour was earlier one of the biggest fishing harbours of Gotland. It probably existed ever since Viking times, and later it was the starting point for sea transport towards Riga Bay. Today Herrvik harbour has lost its' importance, due to the decrease of the small- scale fishing industry. Herrvik also has a guest harbour for sailing boats.
Several birds hatch on the island.
An inventory in 1987 showed 34 hatching varieties. In May, the eiders' nests are scattered over the island, the lesser black-backed gulls guard theirs nests on the north side, and the terns dive with sharp beaks against intruders on the stony beaches. If you are lucky you might catch a glimpse of the largest tern, the Caspian tern. On the island you find Gotland's largest colony of black guillemot. During summer, sheep are grazing, keeping the meadows suitable for several rare orchids.