National Speleology Days

The Spéléo Club des Mémises invites you to come and discover the Portes de la Nuit cave located in Plaine Dranse.
Description
The 3 -hours visit is open to anyone in good physical condition, over 10 years old. The club provides a helmet, wetsuit and harness.
You will need to bring gloves, boots, a change of clothes and a snack.
A special outing is available for children aged 6 to 10 accompanied by their parents.
Reservation via the registration link.
Additional information
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Minimum age : 10 years
Animals
Animaux acceptés : Non
Prices
Free of charge.
Période d'ouverture
From Saturday 4 to Sunday 5 October 2025 Departure times on Sunday from 9 am, from 11.30 am and from 2 pm. On Saturday from 10 am, from 12.30 pm and from 3 pm.
Subject to favorable weather.
Additional information
Registration mandatory
Languages spoken
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French
Location
Accessible in winter via the Pierre Longue chairlift (skiers and pedestrians) and in summer via the chairlift (pedestrians and MTB), by car or on foot.
Parking.
Public toilet.