Edmond, the former caretaker of the mountain hut, needs your help. The mountain’s balance is in danger.
A mysterious locked chest, a series of puzzles to solve… It’s up to you to search, communicate, and work together to uncover the secret of the chest! Only in French.
This ticket includes the workshop and provides access to La Source (play areas, book hives, exhibition, etc.) on the same day.
Any accompanying person, whether an adult or a child, who is not taking part in the workshop must purchase an entry ticket to access the facilities at La Source.
Payment methods
Check
Bank/credit card
Cash
Travellers Cheque
Groups (Max capacity)
Groups (Max capacity)
6 Maximum number of people
Accepted customers
Home school groups
Children
Specially for children
Groups
Minimum age (in years) : 8
Openings
Tuesday 4 August 2026
Tuesday 4 August 2026
at 09:30
11 a.m., 1 p.m., 2:30 p.m., 4 p.m., 5:30 p.m.
Location
Escape game in a trunck ‘La Montagne’
Elevation : 922m
La Source, 66 Chemin des Dodes, 74450 Le Grand-Bornand