The variant of the Pero is taken after 10 kilometers turning in direction of the homonym farmhouse, after having bathed with the clear waters of Orcia.  The deviation is very demanding but allows you to return on the main path after about 6 kilometers.

The cut is suggestive and offers glimpses of great beauty of the gullies of Orcia.

All in all it's a challenging 20 kilometers but well worth it.