Dent d'Hérens

Dent d’Hérens (4,171 m) – East Ridge ascent, Tiefenmatt Ridge descent

We started in Dzovernouz, where we rented mountain bikes from Miciolan – highly recommended, as the long track along the reservoir would be tedious on foot. Riding along the dam, we then continued on foot through the long valley up to the Rifugio Aosta.

On arrival we were warmly welcomed by Diego, the legendary and unique hut guardian, famous for offering his guests a glass of local génépi. We enjoyed excellent pasta at a very fair hut price, discussed the conditions, and relaxed in the afternoon sun. As the hut was fully booked, we continued our ascent.

Crossing the glacier in already soft snow, we climbed to the Bivacco Perelli, located just below 4,000 m. This tiny corrugated-metal bivouac sits on a sharp ridge and truly feels like a “doghouse”. Depending on your mindset, it can either be intimidating or magical. Despite its very basic comfort, we thoroughly enjoyed the night there – especially thanks to an absolutely spectacular sunset.

The next morning we deliberately started a bit later. We crossed the glacier towards the East Shoulder, where we were rewarded with an impressive view of the Matterhorn, which we had climbed only four days earlier. From here, the real challenge began: the East Ridge.

The ridge was completely untracked, extremely loose, and highly exposed. Technically the climbing is never very hard, but it demands constant attention, as every hold must be tested. There are no fixed protections – everything has to be protected by the climbers themselves (traditional climbing). A wild, serious and very rewarding alpine ridge.

On the summit, we took time to enjoy the outstanding panorama over the Matterhorn, Monte Rosa and the great Valais peaks.

The descent followed the Tiefenmatt Ridge. Along the way we spotted a heart-shaped crevasse – a surreal detail in such a rugged environment. Particular care was required at the entry to the ridge: after a massive rockfall a few weeks earlier, the route has been completely altered, very loose, and equipped with a newly installed chain, which we tested carefully.

We returned to the Rifugio Aosta, where Diego greeted Tim with: “Do you want a génépi?” and congratulated us on the traverse. A long return followed, ending with a fun and fast mountain-bike descent back to Dzovernouz.

Key sections (summary)

• Glacier crossing Rifugio Aosta → Bivacco Perelli in soft snow

• Highly exposed Bivacco Perelli just below 4,000 m

• East Shoulder: transition from glacier to rock

• East Ridge: very loose, untracked, extremely exposed

• Entirely self-protected climbing (trad)

• Descent via the Tiefenmatt Ridge

• Newly reworked, unstable ridge entry after a major rockfall

Technical data and equipment

• Summit: Dent d’Hérens – 4,171 m

• Start: Dzovernouz

• Accommodation: Rifugio Aosta / Bivacco Perelli

• Route: East Ridge – Tiefenmatt Ridge descent

• Difficulty: AD (serious due to exposure and rock quality)

• Character: committing, high-alpine traverse

• Equipment:

  • Rope 40–50 m

  • Crampons and ice axe

  • Helmet (essential)

  • Small trad rack (nuts, cams, slings)

  • Standard alpine gear