Short, lively canyon with natural slides, jumps and a famous ‘Mailbox’ rock arch. Guided sessions near Annecy introduce canyoning techniques in a limestone gorge fed by alpine springs.
More ways to explore the area's outdoor wonders
A cool spray greets you before the first step — the canyon mouth frames a ribbon of water cutting through pale limestone, fir needles slicking the banks. Guides in wetsuits knot harnesses and laugh as participants line up to slip under the rock known locally as “La Boîte aux Lettres” — the Mailbox — a narrow natural arch that sends you through like a letter in motion.
Difficulty
moderate
Duration
2–3 hours
Fitness Level
Moderate fitness; comfortable with uneven terrain and basic swimming for short stretches
Wildlife
History
The canyon sits in limestone sculpted by glacial melt; local hamlets around Lake Annecy have a long tradition of mountain guiding and summer pasture use.
Conservation
Operators limit group sizes and stick to established lines to minimize erosion; pack out waste and avoid climbing off-route to protect fragile limestone and riparian plants.
Reserve your spot on the Canyoning in Annecy - La Boîte aux Lettres in Angon today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Wear closed water shoes
Sturdy neoprene or rubber‑soled water shoes protect toes and provide grip on polished limestone.
Bring a small towel and dry clothes
You’ll get wet from pool jumps and sprays; a quick change keeps you warm after the run.
Be honest about medical conditions
This activity is not suitable for pregnant travelers or those with cardiovascular issues — guides will check fitness and weight.
Arrive hydrated and fed
A light meal and hydration beforehand keeps energy up for jumps and short climbs.
Wetsuit (provided on tour)
Keeps you warm in cold alpine pools and during windy approaches.
spring
Closed‑toe canyoning/water shoes
Essential for grip on wet limestone and rocky entry points.
summer
Quick‑dry base layer
A lightweight layer under the wetsuit adds warmth on cooler days.
fall
Small dry bag or waterproof pouch
Keeps phone, keys and snacks dry before and after the activity.
summer