Valsörarna is located on the northwestern side of Replot and it belongs to the Korsholm municipality. As well as the main island, made up of Storskär and Äbbskäret, the area includes about 65 islands and islets of different sizes. The landscape is characterized by the rocky and bouldery moraines, which were formed over the years with the withdrawal of the ice age and of which the mainly northwestern and southeastern peninsulas and islands are made up of. The vegetation of the bleak moraine formations is mainly heath-like, but diverse. It is made up of marshy depressions, coastal fields, birch groves, junipers, beach alder groves, and large individual spruces. The sheltered bay areas are generally quite shallow.