Achenkirch - Gröbner Hals - Steinölbrennerei im Bächental - Achenkirch
From the car park of the Christlum lifts, walk through the Unterautal valley to the Gröbner Alm mountain hut (not serviced, time ca. 2 hours) and continue to the Gröbner Hals. From here, a steep trail descends to the Tiroler Steinöl® (shale oil) surface mining and production facility. The return is via the same route.