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About this place
Bonigersee is a tiny mountain lake above Törbel in the Swiss canton of Valais. It sits at about 2,090 m on the Moosalp, covers just 0.9 hectares, and is ringed by a raised bog that appears on the federal list of bogs of national importance.
Why is Bonigersee special?
The lake lies inside the Moosalp nature reserve, roughly 147 hectares in size and protected since 1995. It is listed in two federal inventories at once: raised and transitional bogs, and amphibian spawning sites. The Federal Office for the Environment files the site under the number VS349.
The protection has a clear reason. Many alpine newts live in the water, and common frogs return every year to spawn. Rare dragonflies breed here too, among them the endangered Scarce Emerald Damselfly.
What will you see?
The lake lies below the Stand viewpoint, and a trail runs around most of its shore. From the viewpoint you look out over a ring of 4,000-metre peaks. Sphagnum moss forms floating mats toward the middle of the water. The canton warns visitors not to step onto them, so watch the bog from the path.
The Moosalp has a dense network of hiking paths, which makes it easy to fit the lake into a longer walk. Information boards stand on site, and restaurants operate nearby.
How do you get to Bonigersee?
Start in the Mattertal valley. A bus runs from Visp or Stalden station up to Moosalp. You can also walk from Törbel, which the canton's protected-sites page puts at about 1.5 hours. There is a car park in Törbel.
When should you visit?
At over 2,000 m the lake suits a summer hike, when the trails are free of snow. Amphibian activity at the water is highest in the spawning season. Check a current trail map and the bus timetable before you set out.
Frequently Asked Questions
How big is Bonigersee?
The lake covers 0.9 hectares. The surrounding bog and amphibian habitat in the federal inventory spans 5.7 hectares.
Can you walk on the floating bog?
No. The sphagnum mats in the middle of the lake are unstable, and the canton warns against stepping on them. Stay on the trail.
Can you reach it without a car?
Yes. A bus connects Visp or Stalden station with Moosalp, and walkers can climb from Törbel in about 1.5 hours.
What wildlife lives here?
Alpine newts, common frogs and rare dragonflies, including the Scarce Emerald Damselfly.
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