Trümmelbach Falls, Subterranean waterfall system in Lauterbrunnen Valley, Switzerland
Trümmelbach Falls is a system of ten waterfalls flowing inside the mountain rock of Lauterbrunnen Valley. The water comes from the glaciers of surrounding peaks and travels through natural rock tunnels that have been partially developed so visitors can walk through them.
These waterfalls formed over thousands of years from glacial meltwater flowing from the surrounding mountain range. The site opened to the public in 1877 after early access routes were carved into the rock.
The name comes from an old word meaning water surge, reflecting the raw power of the flow through the mountain passages. Both locals and visitors are struck by the sheer force of the water and its echoing roar within the narrow tunnels.
You reach the waterfalls by walking through tunnel systems and platforms built into the mountain. Be prepared for wet and slippery surfaces, and wear sturdy shoes for safe footing.
The water passes through ten separate waterfall cascades one after another as it flows downward. This makes it one of the few places where you can witness the full power of glacial water at different levels in sequence.
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