Grottes des Moidons, Natural cave and viewpoint in Molain, France
The Grottes des Moidons extend through multiple limestone chambers filled with stalactites, stalagmites, and mineral formations shaped over thousands of years.
The cave system, discovered in 1966 and opened to visitors in 1989, reveals geological processes dating back millions of years in the Jura Mountains.
The cave network features regular sound and light presentations that illuminate the mineral formations while explaining their geological development through educational narration.
Visitors can access the caves from April through September, with guided tours lasting 50 minutes and including educational films about cave formation.
A dedicated space within the cave system educates visitors about the resident bat populations and their role in the cave's ecosystem.
Location: Molain
Address: Grotte des Moidons, 39800 Molain, France 39800 Molain
Opening Hours: April 14:00-17:15; April Wednesday off; May 11:00-17:15; May Wednesday off; June 11:00-17:15, Wednesday[1-2] off; July-August 10:30-17:30; September 01-14 11:00-17:15; September 15-30 14:00-17:15; Wednesday[3-4] off
Phone: +33384517494
Website: https://grottesdesmoidons.com
GPS coordinates: 46.83844,5.80664
Latest update: October 24, 2025 17:19
The Jura department is home to glacial lakes, natural waterfalls, geological formations, and medieval towns. Notable natural sites include the Cascades du Hérisson, Lac de Chalain, and Reculée de Baume-les-Messieurs. Urban centers like Dole, Arbois, and Salins-les-Bains retain their architectural heritage from the 16th and 17th centuries. The region offers outdoor activities in the Haut-Jura Nature Park and the ski resorts of Les Rousses and Métabief.
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