In April there is often too much snow on the northern sides of the Chiemgau mountains to undertake a proper summit tour. A particularly beautiful circular tour leads through the Eggstätter Lake District, which saw the light of day thanks to the mountains towering in the south.
After hiking from the hiking car park through a beautiful valley and along Einbessee, you continue along root paths to Hartsee, which, at almost 90 hectares, is the largest of the 18 individual lakes. The lakes are dead ice holes filled with water. Dead ice was formed when the ice from the mighty glacier armor did not melt away evenly at the end of the ice age, but rather disintegrated. Huge streams of meltwater deposited large amounts of sediment next to and on the ice blocks. After the ice in the subsurface melted, the surface above the dead ice slowly sank and a dead ice hole was able to form. In spring, only hard-core people will dare to jump into the water from the large bathing area of the Hartsee.