Immerse yourself in the daily life of a crew of La Ferté during a guided tour by going down to 25 meters underground, by the light of petroleum lamps. The visit is accompanied by the start of one of the generators and the ventilation system.
The tour is guided and lasts two hours. Good shoes and jackets are recommended (12°C and puddles in the underground gallery). At 20:45, screening of an introductory film, then departure on a visit.Night visit rates: 9 euros for 15 years and more; 4 euros for 7-14 years; free for the youngest.