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Hike to the Source of the River Isar – Kastenalm Alpine Hut / Trail no. 224

Route: Scharnitz – Gleirschhöhe – Source of the Isar – Kastenalm
Walking time: approx. 6 hours
Starting at the information office, cross the bridge over the river Isar, turn left before the church and
follow the road Hinterautalstraße. Pass by the car park into the Hinterautal valley. At Gleirschhöhe
take the road to the left towards the source of the Isar. From the source of the Isar continue into
the valley to the hut Kastenalm, where refreshments are available in the summer months. Take the
same route back to Scharnitz.