The Silberbrünneli is on the way from the hamlet of Thalmühle in Bachsen to Niederweningen. It's just under five minutes from the Rütihof up into the forest and to the forest spring with a spacious fireplace. The now peaceful place has a bloody history. A forest worker took his son into the forest. He had received a silver spoon from his godfather, which his father now demanded for himself. His son refused, and in his anger the man pushed his own child over the edge of the rifts. The boy's body was found at the Silberbrünneli along with the silver spoon. The rocks near the source are about thirty meters high. Giants have obviously let off steam here and left their "toys" in the form of tree trunks and oversized blocks of stone.