The Lägern is a 866 m high, wooded mountain of the Jura Mountains, stretching from Baden to Dielsdorf, which is located about 15 km north-west of Zurich. The culminating point is located 1 km west of Hochwacht within the canton of Zurich, the border with the canton of Aargau runs acress a slightly lower summit named Burghorn, at an altitude of 859 m.
The Lägern lies in the easternmost part of the Jura Mountains, east of the river Aare. It is the highest summit of the range lying between the High Rhine, Aare and Limmat. Its location east of the Aare makes it topographically connected to the Appenzell Alps, by the chain of hills running north of Lake Zurich.
Wikipedia https://en.wikipedia.org/wiki/Lägern
Address 8165, Switzerland
Coordinates 47°28'54.543" N 8°23'37.864" E