INFOS from hallstattaustria
The Lammerklamm is a deep gorge that’s technically not in the Salzkammergut, but it lies on the way to Hallstatt from Salzburg, and it’s well worth a stop.
The Lammerklamm is a deep chasm about 30 km south of Salzburg, Austria, and around 10 km west of Golling, just as you enter the Alps (see map). It’s a wonderful place to stop on the road to Hallstatt and spend a few hours in one of Salzburg’s Natural Areas.
GPS: 47.587877, 13.269256