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/!\ Crossing prohibited /!\

Lacs de Maclu are two adjacent lakes in the western part of the French Jura, in the Jura department of Franche-Comté. They are located at an elevation of 779 m in a depression in the High Jura, in the region of the Five Lakes near Le Frasnois, about 12 km south of Champagnole. The Petit Maclu, located to the northeast, has an area of 5 hectares, a length of about 500 m, and a maximum width of about 120 m. Its greatest depth is 11 m. It lies entirely within the municipal territory of Le Frasnois.

Easy, shaded path, perfect for cooling off in hot weather.

Worth a visit to see the music room.

On most maps it is called "Lac d’Ilay". The other name probably comes from the small island "Île de la Motte" which is located in the lake.

Pass without any difficulty from Mouthe: approximately 6.5 km at 3-4%.

Very nice on the way back along the south of the lake

Lake Chalain is a glacial lake (10th largest natural lake in France), where a lakeside city dating from the Neolithic period, classified as a world heritage site, was discovered.*The view from the Fontenu belvedere will reveal its turquoise waters. !