It is found many annular sacrificial in Finnmark. There are two such in Mortensnes and the one located under the bear stone. It is built in stone up to a mountain, so the mountain forms one wall of the ring. There is no specific information about what sacrifice space has been used, or the rituals that have taken place in it. What makes that sacrifice ring stand out from the other cultural monuments, is that it is man-made. Offerring location may indicate several things. There is one large burial ground west of the ring. This may indicate that it has been used in burial rituals. Rituals can be associated with a transition from life on earth to the Sami Hades Jábmiidáibmu. Just east of the ring there is a cliff, where there is a rich birdlife. It is conceivable that it is gently sacrificed things in connection with collecting eggs. Another interpretation is that it can be related to bear stone.
Sources: Tjelle, Ingjerd. Arvid Sveen: Mythical Landscapes. Google trans.