The hammer that flew between Kärla and Kaarma

The legend says that Suur Tõll built the church at Kärla, choosing the site by letting oxen haul a cart of stones until they stopped of their own accord. At the same time his son was building a church at Kaarma, but he had no hammer. When he asked his father for one, Tõll refused, then flung his own hammer across the island. It landed beside the Kaarma church; the son knocked off its back end, used it and threw it back. From then on the hammer flew between the two building sites every day, whenever either builder needed it. The tale also explains a name: crows, kaarnad, used to sit on the roof of a house here, so people spoke of the crow-house church, later shortened to Kaarma. Both churches still stand.