There are not a lot of rainy day activities in a outdoor wonderland like the Bernese Oberland, but Trummelbach Falls is certainly one of them.
With its ten glacial water falls inside the mountain, made accessible by tunnel lift, the Trümmelbach waterfalls are truly unique in Europe. Trümmelbach alone drains the enormous glacial walls of the Eiger (3970m), Mönch (4099m) and Jungfrau (4158m) with up to a spectacular 20,000 litres of water per second. This stems from a catchment area of 24 square kilometres of which approximately half is covered with snow and ice. UNESCO world natural heritage.
and then…true to form, we walked back to the cable car in the rain.