The site consists of a reception building with shop and meals, and a dormitory building with its own kitchen. From here, two options lead to the Onda: the Manganellu valley floor or the yellow-waymarked ridge variant.
- Location
- Petra Piana (below Monte Rotondo), Venaco (France)
- Season
- Staffed from 16 May to 4 October 2026; outside the staffed period, the winter section is unstaffed and cannot be booked
- Booking
- Booking is compulsory online at pnr-resa.corsica (card payment, at least 48 hours in advance); place guaranteed until 7 pm; changes possible up to 2 days before; order meals from the warden on arrival. PNRC central office: +33 (0)4 20 06 12 00 or +33 (0)4 95 51 79 06.
- Half board
- Overnight stay on a sleeping platform €20 per person (PNRC 2026 rate, meals not included, payable on site)indicative price
- Run by
- PNRC
Position: On the main route, km 71.8 from Calenzana.
Facilities
Which stage of the GR20?
- Stage 7: Refuge de Manganu – Refuge de Petra Piana8.3 km · 800 m ascent
- Stage 8: Refuge de Petra Piana – Refuge de l'Onda9.9 km · 470 m ascent
Location
Coordinates: 42.19807, 9.05245 · Open in OpenStreetMap
Nearby
- Aire de bivouac de Petra PianaCampsite · 50 m as the crow flies
- Aire de bivouac de l'Onda (bergerie de l'Onda)Campsite · 5.3 km as the crow flies
- Refuge de l'OndaRefuge · 5.4 km as the crow flies
- Aire de bivouac de ManganuCampsite · 6.4 km as the crow flies
- Refuge de ManganuRefuge · 6.4 km as the crow flies
- Bergerie de VaccaghjaCampsite · 7.8 km as the crow flies