Nestled in a peaceful cirque with a beautiful view of snow-covered Mont Bego, Lac des Grenouilles keeps its waters under ice in winter. You may catch fleeting glimpses of chamois taking up this sheltered territory during the winter months.
From the hamlet of Castérino (1,550 m), follow the road (2.5 km) which climbs gently up the geographical right bank of the valley of the same name to the Valmasque parking lot (1,700 m - b.395), then left onto a forest track which rises through a beautiful melezin. When the latter turns east to dominate the Fontanalbe valley (b.392), reach the edge of Lac des Grenouilles (north) via the ridges among the last old larch trees. Return to the forest track and turn right (south-west) to descend gently into the Fontanalbe valley. Staying on the left bank, you cross a small plateau (large boulders) before plunging down over gentle slopes to the charming Fontanalbe vacheries. A footbridge allows you to cross over to the right bank to gain a little height (1,750 m) and finally find the old military road leading back to the Castérino chalets (b.391).
Services
Services
Parking nearby
Accessibility
Accessibility
Not accessible in a wheelchair
Rates
Rates
Free access.
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Openings
Openings
From 1 December 2025 until 30 April 2026 - Open everyday
Depending on snow conditions
Subject to favorable weather
Subject to snow conditions
Location
Location
Spoken languages
Spoken languages
Environment
Environment
- Riverside
- Forest location
- Lake view
- Mountain view
- Mountain location
- Isolated
- Close to GR footpath
- Waterside
- Panoramic view
- Sensitive Natural Area
Access
Access
- From Menton, follow the A8 east to Ventimiglia (Italy). Drive up the Roya valley on the main road, then on the RD 6204, passing Breil-sur-Roya, Fontan and St-Dalmas-de-Tende.
At the end of this last village, fork left (RD 91) to reach the hamlet of Casterino.
