Circuit des 3 Bisses-Vercorin: Crawl, Zip & Drop into Niouc Gorge
When I completed this loop back in 2019, the modern Niouc Via Ferrata (VF) didn't exist, leaving us to tackle the gorge using an amazing 180-meter abseil and a 220-meter zipline double-feature. In this trip review, I'll share our exact journey, historical details, public transit info, and a look at the wild new activities you can experience at the gorge today…
Route Summary
Before diving in, literally, here is the tracking data from our spectacular day on the trail:
Distance: c.19 kilometers.
Elevation Profile: +200 meters of climbing / -910 meters of descent.
Duration: 5+ hours of continuous, high-focus movement.
Starting Point: Chalais-Vercorin Cable Car station up to Vercorin village.
Warm-Up: Bisse des Sarrasins (Public trail to the locked gate).
Restricted Zone: Hands-&-knees rock channel crawling, roped to the guide.
Gorge Crossroads: Niouc Suspension Footbridge (the "Spider's Bridge").
Adrenaline Double-Feature: 220m zipline + 180m canyon abseil.
Return Leg: Bisse de Briey & Bisse du Ricard network back to Chalais.
Basecamp: Discovering Vercorin
Our day began with a scenic, deceptive calm as we rode the Chalais-Vercorin cable car up to the alpine village of Vercorin, stepping out into crisp mountain air. Look down as you ascend-the sprawling, checkerboard layout of the Rhone Valley unfolds beautifully beneath you. Often called the "Balcony of the Valais," Vercorin sits like an eagle's nest on a mountain plateau perched at 1,330 m (4,363 ft). Because of this sheltered geographic position, it experiences a surprisingly mild microclimate; it is actually famous for its blooming cherry trees in the spring, which is incredibly rare for this altitude in Switzerland.
Before hitting the trail, we took a moment to look around the village center. Unlike heavily commercialized Swiss resorts, Vercorin has fiercely preserved its medieval heritage. Strolling through the central square means walking past traditional raccards (ancient Valaisan grain stores raised on stone stilts to keep rodents out) and centuries-old barns. Their wood has been toasted and blackened over hundreds of years by the alpine sun. The whole historical layout gracefully curves around a distinctive, ancient Romanesque church tower.
Vercorin is also the official gateway to the Vallon de Rechy, a strictly protected, completely undeveloped valley. It remains one of the last landscapes in Central Valais entirely devoid of roads or ski lifts, acting as a quiet haven for alpine deer, wildlife, and fields of wild Edelweiss right next door to our high-octane route. After meeting our certified guide from the Maison des Guides No Limits Experience, we geared up: heavy-duty climbing harnesses, helmets, gloves and VF shock-absorbing lanyards.
The Warm-Up: Stepping into History
We set off along the Bisse des Sarrasins. In the Valais region, bisse are historic, open-air irrigation channels engineered centuries ago to divert precious water down dry mountain slopes to vineyards and pastures. Built heavily between 1415 and 1513, the Bisse des Sarrasins is a marvel of medieval engineering. Local folklore originally claimed it was built by the Saracens who supposedly ventured up the Alpine valleys in the 10th century - a myth that adds a mystical weight to the ground beneath your feet.
The trail started easily enough, winding through fragrant larch forests and offering sweeping views across the valley. But the casual hiking ended abruptly at a heavy, padlocked metal security gate. Beyond this point, entry is strictly forbidden without a professional guide. Our guide clicked the lock open, we stepped through, and the real adventure began…
The Forbidden Bisses: Crawling Through the Face
The terrain shifted instantly, and any illusion of this being a standard trail vanished. The wide dirt path disappeared, replaced by narrow wooden planks tacked directly onto vertical rock faces. But the real test on this first bisse comes when even those narrow planks run out. Suddenly, the cliffside closes in, forcing you down onto your hands and knees. To move forward, you have to literally crawl directly inside the ancient irrigation channel, hollowed out straight through the solid rock face by ancestors centuries ago.
Because a slip here would mean a catastrophic drop into the abyss, the safety protocol escalates dramatically. Before entering this section, our guide tied the entire team together onto a climbing rope, anchoring us directly to them for absolute safety. This intense, high-risk exposure is exactly why this section of the route is locked tightly behind security gates - without a guide, proper ropes, and technical safety gear, it is impassable.
We spent the next hour or so clipping and unclipping our lanyards onto the safety cables and moving as a coordinated team. With every movement, a glance out of the rock tunnels revealed a dizzying drop straight into the roaring, turquoise waters of the Navizence River below. This is not really intended for tall people like myself.
Looking up across the chasm, the staggering visual backdrop of the Imperial Crown - the group of five monumental 4,000m peaks (including the iconic Weisshorn & Zinalrothorn) - stood like snow-capped sentinels guarding the valley. Navigating these narrow pathways required total focus and a complete dismissal of vertigo.
Niouc Bridge Double-Feature: Zip & Drop
The steep forest trail T3+ eventually led us to the foot of the legendary Niouc Suspension bridge (known as the "Spider's Bridge"). Hanging a dizzying 190 m (623 feet) over the gorge, it is one of the highest suspension bridges in Europe. See my other articles on the VF and Bisse hikes in this region.
The history of this bridge is wild. It was constructed back in 1922 to carry an industrial water pipeline across the deep canyon to feed the Bisse de Briey. Because its complex network of web-like structural stability cables makes it look exactly like a giant cobweb hanging between the cliffs, locals aptly named it the Spider Bridge.
From 1922 to 1929, it actually held the title of the highest bridge in the world. By the late 20th century, it fell into disrepair, but it was saved and renovated in 1981 by a non-profit association, which you can join, later becoming a legendary hotspot for extreme sports - as you will see…
Because the modern under-bridge VF didn't exist back in 2019, our guide used the bridge's adrenaline infrastructure to give us an intense double-feature:
1. The 220-Meter Mega Zipline
First up was the tandem zipline. Strapped into our harnesses, we launched off the edge of the canyon wall, flying across the massive gap. The wind roared past as the entire gorge opened up beneath us-a massive, panoramic adrenaline rush that left us breathless, and with only a small wooden stick to slow you down...
2. The 180-Meter Free-Hanging Abseil
If the zipline was a rush, then the abseil was pure, unadulterated triumph. One by one, we stepped off the bridge infrastructure into a 180-meter free-hanging rappel straight down into the belly of the canyon. Lowering yourself manually into a massive abyss with nothing but empty air around you is a psychological battle. Reaching the canyon floor felt like conquering Everest.
New Thrills at the Adventure Park Today
If you visit the bridge today, the extreme sports hub surrounding the gorge has exploded with even more gravitational madness managed by Bungy Niouc Adventure Park:
190m Bungee Jump: The undisputed king of the park, allowing you to plunge straight off the bridge platform into the abyss.
Giant Swing: A terrifying tandem or solo canyon swing that drops you from the bridge platform into a massive, high-speed pendulum arc.
Rope Jump: A European exclusivity offering a simulated technical free-fly experience over the gorge.
For more experienced users, a 200m Via Ferrata route directly under the bridge and also Slacklining.
Joining the Community: "L'Association des Amis du Pont"
The bridge itself is not actually owned by a commercial enterprise - it is maintained and protected by a passionate non-profit organization called L'Association des Amis du Pont Suspendu de Niouc (The Association of Friends of the Niouc Suspension Bridge). If you fall in love with the historical structure, the canyon, and its infrastructure, you can become an active member of this community, get discounts and attend social events, etc.
Beyond the Bisses: Other Major Adventures with "No Limits Experience"
The guys behind the restricted 3 Bisses route, the Maison des Guides No Limits Experience, are famous across the Valais for pushing the boundaries of extreme alpine sports. If you want to scale up your adrenaline or return to the region for a completely different thrill, these are their other hallmark high-octane activities:
High Alpine Mountaineering: Preparation packages to take expert climbers up the iconic 4,478m Matterhorn via the classic Hornli ridge, or "Objectif 4000m" to coach intermediate hikers up their first major glacier peaks.
Canyoning & Culinary Tours: Descending water-carved granite slots via natural rock toboggans and waterfall jumps, paired with a private wine cellar tour and a traditional Valais raclette feast.
Winter Adrenaline: Backcountry heliskiing on the terrifyingly steep, legendary faces of the Bec des Rosses in Verbier, or scaling vertical ice waterfalls with dual ice axes.
Return Journey: A Stunning Walk Above the Gorge
After extracting ourselves from the canyon floor, we hooked into the ancient Bisse de Ricard network. This channel has irrigated the cascading, sun-baked vineyards of Chippis and Chalais for nearly 500 years.
You might think checking off a massive 19 Km with -900 meters of descent would make the return stretch a grueling grind, but it was quite the opposite. The path back is a beautiful, deeply rewarding walk that hugs the cliff edge above the Navizence River.
As you traverse the mountainside forest, the trail keeps you engaged by crossing cascading mountain waterfalls and navigating occasional old rockfall zones, where your via ferrata equipment comes in handy once again to keep you securely attached to the safety lines.
With the steady, manageable descent to the plateau, your eyes are constantly treated to sweeping, panoramic views opening up across the wide Rhone Valley below. The crisp rustle of the Valais pines and the sheer expansiveness of the landscape keep your spirits incredibly high over those final kilometers.
When we finally clocked our tracking apps at over 5 hours, we reached the Vercorin cable car station, and the bus back home. We were tired, sweaty, and completely exhilarated. This version of the 3 Bisses loop proved that walking a tightrope between ancient history and modern extreme sports makes for an amazing adventure.
Trip Planning Essentials
The Organisation: Do not attempt the restricted sections alone (locked). Book exclusively through the Maison des Guides No Limits Experience.
The Gear: Sturdy hiking boots with excellent grip are essential. The guide will provide your VF set, harness, and helmet - bring your own gloves, snacks, water, etc.
Public Transport Access: Getting here via Swiss public transit is incredibly easy. Take the SBB train to the Sierre/Siders station. From there, hop on the local CarPostal (PostBus) network directly to the Chalais, telepherique bus stop. The base station for the cable car up to Vercorin sits right next to the bus stop.
My Verdict: If you have no fear of heights and a craving for pure Swiss adrenaline, put this one on your bucket list today…
This hike was done by the Author and colleagues on the 5th of October 2019. See my other hikes, bisse & climbs in this area. Contact me by email for photos or to ask questions.
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