When at the camping at Bonifatu....we were en route South on the Mare e Monti Trail....we had time to check out the paths leading up to two of the GR20 refuges.
The path into the Cirque is easy to follow from Bonifatu. There is a junction after around one and a half kilometeres or so with the path going up to l'Ortu di u Piobbu refuge.
I enclose a couple of images taken en route.
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