No special access issues
P1 (area 520) at km 4.0 from Ulrichen.
5 min to the boulders (river crossing)
P2 (area 522) at km 5.8 from Ulrichen ; or at km 7.7 coming from Nufenenpass.
On foot : 10 min (partly off-tracks)
Start the hike at the orange sign T 523 visible from the parking lot. Head west, go to a river and follow the riverbed downstream. Then take a faint path trough the bushes until you see the first block.
The river has very little water at first and then it’s completely dry (during the summer).