Interesting and varied loop, without great technical difficulty.
Quiet ascent on asphalted roads to Pt 1383, then to Auta Chia. Pastures and forests crossing under the summit of la Patta and then descent on a gravel path to Schwarzsee. Magnificant singletrail from Schwarzsee to Zollhaus. Return to Plaffeien on the cantonal road. 5-10 mn to walk between Pt 1383 and Auta Chia and perhaps on the S hillside of la Patta depending the conditions.
Plaffeien - Plötscha - Auta Chia d’Amont - La Balisa - Schwarzsee - Zollhaus - Plaffeien