Source Bleue

Blue Spring

Useful Information

Location: Cusance
Open: No restrictions.
Fee: free.
Classification: KarstKarst Spring
Dimension: bring torch
Address: Source Bleue, Chemin Source Bleu, 25110 Cusance
As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
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Source Bleue (Blue Spring) is a typical karst spring with a blue lake where the limestone rich water rises from a cave below. The blue colour is a result of the high amount of limestone in the water. All colours of the sunlight except the blue ones are filtered by the water. Rge colour is best visible on sunny days.