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 inhabitants of areas with little precipitation on the south-facing slopes of the Valais have had to cope with aridity for centuries. Through man-made channels called suonen, they divert water from glacial streams to their fields and meadows.