The Aare Headwaters
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 through a dynamic mire landscape to the Aare glaciers north of the Grimsel Lake. These are the headwaters of the Aare River. In addition to their extraordinary significance with regard to water storage, the Unteraar Glacier is also regarded as the cradle of glaciology.