Pic de l'Aigle, Free flight site at Pic de l'Aigle summit, France.
Pic de l'Aigle, also called bec de l'Aigle, is a summit of the Jura massif reaching 998 metres in the commune of La Chaux-du-Dombief, in the Jura department. It forms the western edge of the Haute-Chaîne, on a synclinal fold cut by three thrust faults, and overlooks the valley of the 4 lakes. On a clear day the view reaches the Jura chain and Mont Blanc.
The summit marks the western edge of the Jura's Haute-Chaîne, sitting on a synclinal fold that overrides the lake syncline to the west. Its structure is cut by three faults: the Ilay, Pic de l'Aigle and La Chaux-du-Dombief overthrusts, whose geometry records east-west compression.
The name is tied to a legend recorded in the first half of the 19th century: a winged white horse, richly harnessed and ridden by a king holding a raised sabre, rides through the sky over the dark-fir peaks near the upper-Jura lakes of Bonlieu and Narlay. Local mountain dwellers called it the troubled soul of a former lord of L'Aigle.
The trail leaves from the village of La Chaux-du-Dombief and covers 2 km with 90 m of ascent to the summit. The summit marks the western edge of the Haute-Chaîne, above the valley of the 4 lakes, and on clear days the view reaches the Jura chain and Mont Blanc.
The summit marks the western edge of the Jura's Haute-Chaîne, where three thrust faults — the Ilay, Pic de l'Aigle and La Chaux-du-Dombief overthrusts — cut the structure, evidence of east-west compression. A 2 km trail from La Chaux-du-Dombief village climbs 90 m to the top, which overlooks the Vallée des 4 Lacs and, on clear days, Mont Blanc.
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