Sihlwald, Langnau am Albis

The Sihlwald is a forest and nature reserve in the Sihl Valley of the Swiss canton of Zürich. It is a rare example of a large-scale and original forest, situated on the eastern slopes of the Albis hills to the west side of the Sihl river. Although the forest is owned by the city of Zürich, it is situated outside the city boundary, within the municipality of Horgen and several adjoining municipalities. The Sihlwald now forms part of the Zürich Wilderness Park. ()