From San Carlo in Val Bavona (reachable by PostBus) you reach Robièi by cable car. You walk a short distance on the road towards Lake Zött and then follow the trail towards Randinascia. Once in Randinascia, continue towards Glacier Plain and the Bocchetta di Val Maggia (without crossing it).
To return, follow the signs to Lake Matörgn and continue straight, following a particularly panoramic path overlooking the glacier and the summit of Basòdino.