Fascinating tunnel path with great views. A flashlight can be helpful but is not a must. Also goes well without. The food on the Sulzalm is delicious and inexpensive.
The hiking trail leads through several tunnels that were cut into the rock by the mountain farmers to open up their alpine pastures. A flashlight is helpful, but not essential, as the tunnels are not particularly long.
Here the path takes you through a tunnel carved into the rock. It is not lit, so it is important that you have a lamp with you or a light on your bike.