The Gaistal is a valley in the Austrian state of Tyrol north of Telfs . The river Leutascher Ache flows through the valley. The Gaistal is located between the Wetterstein mountains in the north and the Mieminger mountains in the south and belongs to the municipality of Leutasch . The valley runs from the Igelsee at the Ehrwalder Alm in an easterly direction to the foot of the Hohe Munde mountain, then curves in a northeasterly direction over a length of 15 kilometers to the deep Leutasch gorge near the German Mittenwald . The gorge forms the boundary between Austrian Tyrol and German Bavaria . In the Ice Age, the valley was formed by glaciers . The Gaistal is a popular area for mountain bikers and hikers and is also known as the Almenparadies .