Information only available in German
The Grimsel area forms the eastern border of the World Heritage Site. From the Grimsel Hospice and the Grimsel Pass Road, a hiking trail runs trough a dynamic mire landscape to the Aare glaciers north of the Grimsel Lake. These are the headwaters of the Aare River.
The crystal cleft at Gerstenegg displays the fascinating world of crystals in their natural form. The cavern is situatet about 1.5 kilometers inside the Grimsel Massif. It was discovered in 1974 during construction work for a hydropower station and now constitutes one of the main attractions on the guided tour of the power station.