The Lauterbrunnen valley to the south of Interlaken extends from Zweilütschinen to the foot of the Breithorn, in the Jungfrau massif. The Trogtal, a typical high Alpine valley through which the Weisse Lütschine flows down to join the Schwarze Lütschine at Zweilütschinen, is enclosed between sheer rock walls over which plunge a number of magnificent waterfalls. From Zweilütschinen the road climbs up the valley with a moderate gradient between limestone walls from 300 to 500 m/984 to 1,641ft high. On the right are the Sausbach Falls, and just beyond this, on the left, the Hunnenfluh (1,334 m/4,377ft), rearing up like a semicircular tower.
The Schilthornbahn can be ascended on a cableway from lower station, which takes a little over 30 minutes. At the top is a restaurant and observation deck.
From Stechelberg it is a 45-60 minutes' walk to the group of huts at Trachsellauenen (1,263 m/ 4,144ft), and from there another 1.25 hours' walk to the Schmadribach falls or a 1.5-hour walk to the Alp Obersteinberg (1,770 m/5,807ft), which affords a superb panorama of the mountains and glaciers around the upper part of the Lauterbrunnen valley.
The Trümmelbach Falls plunge down in five mighty cascades through the gorge carved out by the Trümmelbach (open: mid April-end of October; entrance fee; electric elevator, stepped paths, floodlighting). There are breath-taking views of the falls, 10 of which are accessible, thundering down through the mountain at 20,000liters per second. They are fed by the giant ice walls of the Eiger, Mönch and Jungfrau. Almost hidden inside the Schwarze Mönch they are the only waterfalls in Europe inside a mountain which are accessible.
A rewarding excursion from Lauterbrunnen can be made on a mountain road which runs 3.5km/2mi north to the village of Isenfluh (1,084 m/3,557ft), situated on a steep natural terrace affording a superb view of the mountain giants from the Grosshorn to the Eiger. The road to Stechelberg branches off on the left at the Staubbach Hotel in Lauterbrunnen, bends to the left and runs down to cross the Lütschine; it then continues up the valley of the Breithorn, passing two camping sites and the Staubbach falls. From here it is 4km/ 2mi to the Trümmelbach Falls.