Trummelbach Falls

Trümmelbach Falls is the largest underground waterfall in Europe and the world's only glacier-fed waterfall located inside a mountain. These falls carry meltwater from the glaciers of the Jungfrau region down into the valley below, with an incredible flow rate of up to 20,000 liters per second. Every year, the rushing water transports more than 20,000 tons of rocks and gravel, causing vibrations throughout the mountain and producing a thunderous roar. The power and uniqueness of this natural wonder make it well worth a visit.