The Trummelbach Falls (In German: Trümmelbachfälle) in Switzerland are a series of ten glacier-waterfalls inside the mountain made accessible by tunnel-lift and illuminated.
Its drainage area is 24 km², half of it covered by snow and glaciers. Up to 20,000 liters of water per second. The only glacier-waterfalls in Europe inside the mountain and still accessible.
The Trummelbach Falls belong to the UNESCO World Heritage Site Jungfrau-Aletsch Protected Area and is listed in the Federal Inventory of Landscapes and Natural Monuments of National Importance of Switzerland.