an Entity references as follows:
Käferberg (el. 571 metres or 1,873 feet) and Waidberg (el. 601 metres or 1,972 feet) are the summits of a wooded mountain respectively chain of hills overlooking the inner city of Zürich, Zürichsee, Albis chain and Uetliberg, as well as the Limmat Valley and the Zürcher Unterland in Switzerland.