ViaStockalper: Hiking the Gondo Gorge from the Simplon Pass

Walking With Smugglers: Hiking the Gondo Gorge on ViaStockalper

Forget the standard Swiss postcard of pristine cows and gentle alpine meadows. If you want a trail with grit, massive stone fortresses, and a heavy dose of historical drama, pack your boots for the Simplon Pass to Gondo stretch of the historic ViaStockalper (Stockalperweg).

This isn't just a hike; it’s a time machine. For centuries, this razor-thin mountain gap was the ultimate trade artery - and smuggling route - connecting northern Europe to the riches of Italy. Grab your trekking poles, we’re leaving the windy heights of the Simplon Pass to plunge deep into the shadows of the Gondo Gorge…

Route at a Glance

• Route: Simplon Pass → Simplon Dorf → Gondo Gorge → Gondo. (Note: This covers Stages 2 & 3 of the 3-day ViaStockalper trek starting from Brig).

• Distance: ~18 km

• Time: 5 to 6 hours of hiking

• Difficulty: Medium (T2 to T3). Mostly gentle downhill, transitioning into dark, damp canyon paths, wet rock slabs, metallic catwalks, and rock debris fields.

• Elevation Gain: +230 m (mostly minor ascents leaving Simplon Dorf)

• Elevation Loss: -1,380 m (a long, sustained descent that can be hard on the knees)

• Best Season: June to October. The high-alpine pass can hold winter snow well into May, and the gorge catwalks can become dangerously slick or icy outside of these warmer months.

Blood, Salt & Gold: A Quick History of the Simplon Pass

The path you are walking isn't just an engineering feat - it has been a strategic backdoor to Europe for thousands of years:

• Inception (Roman Roots): Long before the stone bridges, the Simplon Pass was a rugged, wild trail. The Romans first recognized its strategic value, using it as a secondary path to move soldiers, messengers & early gold hunters through the Alps.

• Medieval Era & the Smuggler Kings: By the Middle Ages, the pass was a dangerous, lawless route controlled by local chieftains. It was heavily used by smugglers who risked their lives to move salt, wine & tobacco between Switzerland and Italy without paying heavy feudal taxes.

• Stockalper Boom (17th Century): Enter Baron Kaspar Stockalper, the "King of the Simplon." In the 1600s, this brilliant entrepreneur monopolized the regional salt trade. He upgraded the old medieval mule track, building the grand stone towers and hospices you pass on the trail to protect his massive cargo caravans.

• Napoleon’s Artillery Highway (1801–5): After his Italian campaign, Napoleon Bonaparte realized whoever controlled the Simplon Pass controlled the gateway to Milan. He ordered his engineers to build the first true, paved road over the pass - not for trade, but to roll heavy military artillery over the Alps.

• World Wars & the Swiss Fortress: During WWI & WWII, the pass transformed again. Fearing an axis invasion from the south, the Swiss military heavily fortified the Gondo Gorge. They tunneled deep into the granite mountain, turning the tight chasm into an impenetrable, secret military bunker system known as Fort Gondo.

Public Transport Access

The greatest luxury of this hike is the yellow PostBus (Line 641). The bus perfectly mirrors the hiking trail along the main road, making it easy to customize your start point or bail out early:

• From Brig to the Start: Catch PostBus 641 from the front of the Brig Bahnhof (Main Station). It climbs up the mountain, crossing the stunning Ganter Bridge, and drops you directly at the Simplon, Passhöhe in about 45 mins - see my other article.

• Returning to Brig: From the finish in Gondo, hop back on the PostBus 641 at the Gondo, Post stop. It runs all the way back up over the pass & delivers you back to Brig.

• The Safety Net: The bus stops at major milestones along the way (Simplon Dorf, Gabi & Alte Kaserne). If your knees give out or the weather turns bad, a transport point is never far away.

Things to Do at the Simplon Pass

If you arrive early via the PostBus, don't rush off immediately. The pass is a historical destination in its own right:

• Photograph the Simplon Eagle: Walk up to this massive 9m-tall stone monument built during WW2 by the Swiss Army's 11th Mountain Brigade. Fun fact: it was constructed using the very stones blasted out during the clandestine excavation of Fort Gondo!

• Visit Napoleon’s New Hospice: Wander over to this sprawling stone structure directly on the pass plain. Commissioned by Napoleon in 1801 but not finished until 1831 by the Augustinian Canons, it remains one of the largest mountain hospices in the Alps.

• Stroll Around the Rotelsee: A pristine alpine lake just a short 5-min walk from the bus stop. On a calm morning, the surrounding mountain peaks mirror perfectly across the water. Again, see my other articles on this area summer or winter.

Stage 2: Simplon Pass to Simplon Dorf

Distance: 9 km Time: ~2.5 hours Vibe: High-alpine freedom giving way to larch forests.

A Mountain Panorama

As you step off the bus at the Simplon Pass (2,005m), you are surrounded by giants. Look up to see the jagged ridge of the Hübschhorn towering directly over the pass to your left. To the south, the massive, snow-capped dome of the Fletschhorn (3,985m) dominates the skyline, its glaciers glittering on a clear day.

Historical Jewels & What to See

• Alter Spittel (1666): As you descend into the high moorlands, this stunning four-story stone tower appears in a clearing. Baron Kaspar Stockalper built it with a private family chapel on the top floor and an open room on the bottom floor where travelers could stay and eat for free.

• Barral House (1924): A bizarrely shaped, narrow architectural anomaly down the trail - a building 120m long but only 7m wide, built as a mountain retreat for aspiring priests. Now owned by the Swiss military.

• Maschihüs Mule Track: The trail transitions onto a well preserved section of the original medieval stone mule track, passing through a park-like wooded pasture flanked by ancient dry-stone walls and the rushing Chrummbach stream.

TRAIL MYSTERY: FAIRY TALE FOREST OF ROSSBODEN

As you wind down Stage 2 toward Simplon Dorf, you’ll pass through a strikingly eerie stretch of forest filled with dense, uniform, "half-height" larch trees growing wildly over giant mossy boulders. It feels like an ancient fairytale - but it is actually the scar of a catastrophic disaster.

On March 19th, 1901, a massive chunk of the Rossboden Glacier tore free from the peaks above. A colossal rock-and-ice avalanche slammed into the valley floor, burying the landscape under 50m of jagged debris and crushing dozens of homes and barns. The buried ice blocks took over five years to completely melt. Why are the trees so short here? 

1. They are young: The 1901 disaster completely wiped the slate clean. Every single larch you see here had to start from scratch at the exact same time.

2. They are struggling: The trees are fighting to grow directly on top of unstable, nutrient-poor glacial boulder piles. This harsh environment naturally stunts their growth, keeping the entire forest canopy low, dense & uniform.

3. Look Out For: The sudden shift in terrain. One minute you are walking on cow pastures, and the next you are stepping through a literal graveyard of glacial rock that nature is slowly trying to reclaim…

Where to Eat/Recharge

• At the Start (Pass): Fuel up with coffee and a hearty alpine breakfast at the Hotel Monte Leone at the Simplon Pass.

• At the Finish (Simplon Dorf): Reward yourself at the end of Stage 2 at the Hotel Fletschhorn or Bakery Arnold in the village square.

Stage 3: Simplon Dorf to Gondo

Distance: 9 km Time: ~3 to 3.5 hours Vibe: Dramatic, claustrophobic stone chasms.

A Mountain Panorama

Leaving Simplon Dorf, the wide alpine skies vanish. The massive granite massifs of the Seehorn and the Smuggler’s Peak (Furggen) squeeze the valley together, forcing you into the deep shadows of the Gondo Gorge.

Historical Jewels & What to See

• Äbi Warehouse Ruins: Leaving the village, you'll pass the structural stone shell of an unfinished 1676 warehouse that Stockalper was building right before his political downfall.

• Gabi Pitstop: As you reach the tiny hamlet of Gabi, keep your eyes on the cliffs. This is home to the famous Via Ferrata Gabi Simplon, an intense iron path that scales the sheer walls above the valley floor - see my other article…

• Alte Kaserne Transport Museum: Built in 1805 at the northern side of the canyon, this massive Napoleonic stone ruin sits directly over the river. Step inside the Ecomuseum Alte Kaserne. It is unstaffed, free, and open daily from 8:00 AM to 8:00 PM year-round. Across its multiple raw, stone floors, you can explore large picture panels, maps, and an audio-visual room detailing the 4 distinct transport eras of the Simplon Pass. It takes about 20 mins to tour and makes a perfect, shelter-friendly trail stop.

• Jaws of the Gondo Gorge (a Visual Payoff): Leaving the sunlight behind, you plunge into a dramatic, dark chasm where the valley walls completely close in. The environment here is cold, damp, and rugged, but the rewards are spectacular. The trail winds tightly along the crashing waters of the Diveria River, crossing a series of beautifully engineered historic footbridges suspended directly over cascading glacial waterfalls that thunder down into the river channels.

• Bachtschugge Landslide Zone (T3 Warning): When passing through the active landslide area, officially known as Bachtschugge, the path transitions into T3 terrain. You will cross raw rockfall debris fields where the ground is loose and uneven. Look out for the prominent signage warning hikers "DO NOT LINGER" due to acute rockfall risks. Keep your eyes & ears open, maintain a steady pace, watch your footing, and do not stop (long) for photos or rest breaks until you are clear of the debris zone.

Deep Under the Mountain: Fort Gondo

Just when you think the gorge can’t get any more dramatic, you run straight into a massive concrete wall blocking the canyon. This is Fort Gondo, a Swiss military fortification tunneled directly into the mountain during the World Wars. The standard public hiking trail actually goes directly through the heart of this via a 350m-long connecting gallery. You will walk through stone tunnels lit by minimal bunker lighting, catching glimpses of the gorge through tactical windows cut into the rock face.

How to Tour the Fortress Museum

While the transit tunnel is free, the hidden doors lining the path lead to the vast, multi-level bunker complex operating as the Festungsmuseum Fort Gondo. Inside, the rooms are preserved exactly as they were left, featuring historical cannon batteries, troop accommodations, and underground military kitchens:

• Public Guided Tours: Regular public tours run every Saturday at 2:00 PM from June to October. You do not need a group to join these.

• Private Group Tours: Available on request year-round by arranging a booking directly through the Simplon Ecomuseum.

• Duration & Cost: The comprehensive tour lasts roughly 1.5h and costs CHF 10.00 each (cash paid on-site).

• Meeting Point: Meet your guide at the fortress's North Entrance (Simplon village side).

• Gear Tip: Even in summer, the deep granite tunnels are pretty chilly. Pack a warm fleece or jacket specifically for the tour.

Final Stretch to Gondo

• Zwischbergen Cascade: Just before reaching the town, look up to see the breathtaking waterfall pouring down from the wild Zwischbergen Valley.

• Smugglers’ Gorge: As you emerge from the fortress tunnels and the canyon finally narrows toward its end, look closely to your left. You will pass the mouth of the legendary Smugglers’ Gorge (Zwischbergental entrance), a shadowy, historic cleft in the rock where contraband runners used to slip past border guards into Italy - see my other article on my search for the hidden VF route…

• Stockalper Tower: The trail ends under the shadow of this 7-story stone fortress built in the 1600s in Gondo. It served as both Stockalper's southern trading hub and a fortified stronghold. Today, it has been beautifully reconstructed after a devastating landslide in 2000.

Things to Do in Gondo

Once you arrive in Gondo, take some time to explore this tiny border outpost before catching the PostBus back to Brig:

• Explore the Stockalper Gold Mines: Gondo’s history isn't just salt & smuggling - it’s also gold! You can book a tour to explore the historic ruins of the gold mines in the nearby Zwischbergen Valley, where miners panned for gold as far back as Roman times - I am sad I never got to do this one…

• Hunt for Gondo's Talisman: When exploring the seven-story Stockalper Tower, keep in mind its resilient history. After the catastrophic mudslide in 2000, the building was completely restored - and engineers buried a historic 20-franc gold piece beneath its foundations to ensure the village's eternal good fortune.

• Stand at the Italian Border: Walk just a few hundred meters down the road from the center of town to see the Swiss-Italian border checkpoint. You can practically smell the espresso from the Italian side!

Where to Eat/Recharge on Stage 3

• Mid-Way Pitstop (Gabi): Stop at the Gasthof Gabi, a historic inn famously noted for hosting Napoleon on his journey over the pass. It’s the perfect place for a mid-hike lunch of Rösti or a cold platter of dried meats.

• Finish Line (Gondo): Celebrate your trek at the restaurant inside the beautifully restored Stockalper Tower (Hotel Stockalperturm), enjoying a mix of Swiss-Valais alpine dishes and northern Italian-influenced cuisine just meters from the border.

Gear & Packing List: What to Bring

Because the Gondo Gorge is deeply carved, narrow, and heavily shaded by massive rock faces, it remains distinctly dark, cool, and damp even on a hot summer day. There are absolutely no shops, water fountains, or snack stops once you enter the heart of the canyon. You must be entirely self-sufficient. Make sure your pack includes:

• Food/Snacks: Pack high-energy trail mix, bars, or sandwiches from the bakery in Simplon Dorf. There is nowhere to restock until you reach Gondo.

• Water: Carry at least 2L of water per person. Do not rely on finding natural mountain springs in the gorge.

• Warm Layers/Windbreaker: The temperature drops noticeably as you enter the canyon's shadows, and the roaring river creates a constant, damp draft. Keep a fleece or light jacket easily accessible - useful in the fort.

• Trekking Poles: Great for saving your knees on the punishing 1,380m descent, and vital for maintaining your balance on the T3 landslide debris fields & wet rock slabs.

• Boots with Solid Grip: Leave the running shoes at home. The T2+ wet metal catwalks and T3 rocky block fields demand proper hiking boots with deep, grippy outsoles.

• Lighten Your Load Tip: If you are tackling the full 3-day route from Brig, don't break your back carrying heavy gear over the rockfall slabs. You can book daily luggage transport directly through the ViaStockalper Tourism Office, allowing you to complete the tricky gorge sections with a nimble daypack.

This route was hiked by the Author on the 17th of October 2020. See my other article on summer and winter hikes on the Simplon Pass. Contact me by email for photos or to ask questions...