Bachalpsee: The Mirror Lake That Splits in Two – Location and How to Visit

August 12, 2026

At an elevation of 2,265 meters above Grindelwald, which remains behind with its houses, hotels and the monumental profile of the Eiger, the air grows cooler, while the meadows take the place of the roads. In this idyllic setting, the Bernese Oberland shows one of its most recognizable images: the Bachalpsee, a small alpine lake whose fame stems mainly from a simple and spectacular phenomenon.

On clear and windless days, the surface of the water becomes almost a mirror and returns the profile of the surrounding mountains. The Wetterhorn, the Schreckhorn and the Finsteraarhorn thus appear twice, once in the rock and ice of the Bernese Alps, and again in the blue of the basin.

Bachalpsee is also known as Bachsee and carries another evocative nickname, “Jewel of the Alps“, a designation that becomes perfectly understandable once you reach the shore.

Origin and Formation of Bachalpsee

The current shape of Bachalpsee tells a story tied to the geology of the Alps. The lake belongs to an environment sculpted by the action of glaciers and by the processes that formed the valleys of the Oberland Bernese. The water occupies a natural high-altitude depression and the basin features a small natural embankment that divides it into two parts, with one of the two water surfaces located about 6 meters lower than the other.

This separation also makes Bachalpsee distinctive from a landscape perspective. At first glance the surface seems to belong to a single lake, then the eye recognizes the subtle natural division that separates the two basins. Around it unfolds a wetland area of great natural interest.


Alpine peatlands form a delicate environment, tied to the constant presence of water and to the typical temperatures of high elevations. The area is among Switzerland’s nationally protected wetlands of significance, also thanks to the small streams that cross the meadows and feed a mosaic of habitats in which several alpine plant species find space.

The flora, for its part, becomes particularly interesting during the warm season: the snow gradually gives way to flowering meadows and the path to the lake takes on a very different appearance from the winter months. A nature trail also allows visitors to learn more about the local vegetation, with information dedicated to plants that have developed strategies suited to high-mountain conditions.

Visiting Bachalpsee amid Lake, Alpine Meadows and Grand Panoramas

The best-known itinerary starts from First, the upper station of the Grindelwald-First cable car. The ascent by cable car from Grindelwald takes about 25 minutes and reaches 2,165 meters. Right from the station, a remarkable view opens up of the Eiger and the surrounding mountains. The stretch to Bachalpsee covers just under 6 km round trip, with about 200 meters of total elevation gain.

The average time for the complete hike hovers around two hours, considering the classic route. The difficulty remains moderate and makes the lake accessible even to families with children. The first stretch presents the steepest part of the climb: from First you follow the alpine path up to the Gummi-Hütte, located at 2,262 meters. After this section, the terrain eases and the path wanders through high-altitude meadows dotted with flowers until, after less than an hour, Bachalpsee appears.

The shore offers numerous benches, perfect for a pause facing the mountains. It is worth lingering, especially in the early morning or at sunset. The absence of wind turns the water surface into a giant natural mirror, and the Schreckhorn then reflects with remarkable clarity, while the other peaks complete the composition.

On a clear day you can also clearly distinguish the glaciers and the cliff faces of the Bernese Oberland, and the result continually changes with the light: in the morning the mountains look crisper, while in the evening the shadows emphasize ridges and valleys.

The lake also offers the possibility of fishing and spending a few hours along its shores. The water remains cold for most of the year, so the idea of a swim belongs more to personal adventure than to the classic seaside activity. Those wishing to extend the hike can choose the route toward Waldspitz and Bort. Just before the lake begins the Blumenweg, literally the Flower Path, which leads toward Bachläger. The route passes through an area rich in small streams and preserves the character of the old mule-path used by pack-trains.

From Bachläger one reaches Waldspitz in about 20 minutes. Subsequently the route enters the forest and descends more decisively toward Bort. The entire itinerary from First through Bachalpsee, Waldspitz and Bort covers about 5 km and takes almost 2 hours, with a descent of roughly 750 meters. From Bort you can then return to Grindelwald by the cableways or continue with mountain-bike descent activities.

Before or after the hike, First offers additional attractions. The First Cliff Walk lets you peer out over the alpine landscape from a panoramic walkway, while the First Flyer adds a decidedly more adrenaline-fueled element to the day.

Where Bachalpsee is located and how to reach it

Bachalpsee sits in the Bernese Oberland, above Grindelwald, a mountain village in the Canton of Bern famous mainly for its position at the foot of the Eiger. The usual starting point for the hike is First, reachable from the center of Grindelwald by the Grindelwald-First cable car.

The simplest option is to reach Grindelwald by train or by car, then use the cable car up to the First station. From 2,165 meters the path to Bachalpsee begins, with a well-marked route suitable even for those seeking a first high-mountain experience without tackling a strenuous trek.

The most suitable season runs from early summer to autumn, depending on snow conditions and the feasibility of the route. At an altitude of 2,265 meters the weather can change quickly, so mountain-ready footwear, a waterproof jacket and a few extra layers prove useful even on calm days.

The real spectacle arrives with still wind: Bachalpsee then ceases to be merely an Alpine lake and becomes a living photograph of the Bernese Alps. The water mirrors the peaks, the meadows extend to the shore, the streams cross the peatlands and, behind, the landscape climbs toward some of Switzerland’s most imposing mountains.

Maya Bennett

Maya Bennett

I’m a travel writer passionate about responsible tourism, overlooked destinations and the people who give each place its identity. Through my articles, I explore practical ways to travel more thoughtfully while supporting local communities and protecting the natural world.