We went down into the Lauterbrunnen Valley to see Trümmelbach Falls.
There are ten glacier-fed waterfalls here, all hidden inside the mountain, and you reach them through tunnels and galleries cut into the rock, with a tunnel lift to take you inside. Up to 20,000 litres of water a second pour through, and the noise of it forcing its way through is deafening. It makes you feel very small. In places the water thunders through a narrow chasm in the rock, and the spray gets everywhere.
Walking back to Lauterbrunnen afterwards gave us a gentler look at the valley’s huge cliffs and green slopes, and then we went back up to Wengen, which by now felt like home.
Good to know
- Trümmelbach Falls: up to 20,000 litres of water a second pour through. A tunnel lift takes you inside. It’s open from April to November, and adults pay from CHF 18. Children under four aren’t allowed in. Lauterbrunnen
- What to wear: a waterproof jacket. The spray gets everywhere.
We checked these details in October 2026. Times, prices and rules do change, so it’s worth a quick look at the official sites before you go.