Subterranean Swiss falls

Draining glacial meltwater from the mountains Eiger, Mönch and Jungfrau in Switzerland, Trümmelbach Falls are the largest subterranean waterfalls in Europe, with up to 5,000 gallons of water per second streaming down the mountain. Via a tunnel lift, walkways and platforms, visitors can walk the entire course of the cascades. Facilities and a gift shop are at the base of the falls. 

A bus to the site is available from Lauterbrunnen train station, 2 miles away. The falls are open to visitors daily, 9 a.m.-5 p.m., April to June and Sept. to early Nov. and 8:30 a.m.-6 p.m., July to Aug. Times may change depending on weather; check ahead. CHF11 (near $12) adult or CHF4 child. Call +41 33 855 32 32 or visit truemmelbach faelle.ch/e.