This content is also available in

This beautiful ring-shaped walk allows us to discover the high-altitude prairies of the Toggia Valley and at the same time admire 4 lakes. We are in the Bettelmatt cheese production area. From Riale we take the track marked G20 which crosses the hairpin bends of the road to the Saint Giacomo Mountain Pass. At the end of the steep uphill path we continue along the road which first reaches the Maria Luisa Mountain Hut and then goes up to the Toggia Lake Dam.

From here onwards the road continues as a weak slope coasting all of the lake. Ignoring the fork in the road towards the Regina Alp we carry on straight until we arrive at the Saint Giacomo Mountain Pass where we can turn our look towards the underlying Bedretto Valley. On our way back we take the path which along the mountainside goes up to Chalk Cliff ad then to the Boden Lakes.

From the lakes we go down across the mountainside amid high-altitude prairies and debris fields up to reaching the Castel Alp from which along an Alpine pasture track we get back to the crossing with the road for Riale which we take down to Riale.

Last update: 06/03/2018 ore 10:23:48

Itinerary informations

Starting Point

Riale (1729 m) only reachable by bus in the summer (Domodossola – Formazza bus line)


Riale – Maria Luisa Mountain Hut – Toggia Lake Dam – San Giacomo Mountain Pass – Chalk Cliff (Rupe del Gesso) – Boden Lakes – Castel Alp – Castel Lake - Riale

Altitude Difference Going Up

700 m

Altitude Difference Going Down

700 m

Track Length

14 km for the entire track

Elapsed Track Traversal Time

4 h 40 min

Difficulty Level

E (medium difficulty) - The Saint Giacomo Mountain Pass – Boden Lakes – Castel Alp track is not very well-marked: pay attention in case of fog or lack of posts.

Recommended Time Period

June - October


Formazza Valley

© 2017 Ente di Gestione Aree Protette dell’Ossola | Privacy | Cookies  | Accessibilità | Credits

Questo sito utilizza cookie per migliorare la tua esperienza di navigazione ed il funzionamento del sito stesso.Per saperne di più: privacy policy.

  Io accetto i cookie di questo sito
EU Cookie Directive plugin by