The Rumpo peninsula juts south from Vormsi into the shallow Voosi Strait, a quiet finger of juniper meadow, salt marsh and stony shore. The marked nature trail loops for a few kilometres through the reserve, with bird hides at the head of the bay.
This is one of the best places in Estonia for shorebirds and migrating geese — barnacle and white-fronted geese stop here in vast numbers each May and again in September. In winter the bay sometimes freezes solid enough to walk on.