Various hiking routes from the village center Scheffau to Lake Hinterstein:

Option 1: Via Seebachgraben to Lake Hinterstein 
(shown as blue route in this map / walking time: 1 h 30 min)
Starting from the center of Scheffau, follow the path no. 56 past the church and the community hall to Hintersteiner See. After a short walk downhill through the forest, turn right and follow the signs to Hintersteiner See via Seebachgraben (path no. 43) uphill through the forest until you reach the crystal-clear Lake Hinterstein.
Abbreviation: Before reaching the farm Grüblern there is the possibility to shorten left through the forest.

After a short distance downhill through the forest, turn right at the bottom and follow the signs to the Hintersteiner See over the Seebachgraben (path no.43) until you have reached the crystal-clear Hintersteiner See.

Option 2: Via Rehbach gorge to Lake Hinterstein 
(shown as green route and parallel to the red route in this map / walking time: 1 h 30 min)
Starting from the center of Scheffau follow the signs up to the Rehbachklamm and follow the path no. 42 to the car park Gaisberg. There you turn left and follow the path no. 822 via Steinerhof and Gasthof Bärnstatt until you reach Lake Hinterstein.

Option 3: via Rehbach gorge and Steiner Niederalm to Lake Hinterstein 
(shown as red route in this map / walking time: 2 h 30 min)
Starting from the village center Scheffau follow the signs up to Rehbachklamm and follow the path no. 42 to the end of the gorge. Then you pass the Hinterschießlingalm (trail no. 41) until you come to the crossroads where you turn left to Steiner Niederalm. From the pasture, take the road a bit towards Steiner Hochalm, after a sharp right-hand bend, leave the road and follow the path no. 821 to Gasthaus Bärnstatt. There you turn right and follow the path to Lake Hinterstein.