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💧 Trummelbach Waterfalls

Beaches & Water Switzerland Europe

💧 Trummelbach Waterfalls
Europe's largest subterranean waterfall system in the Lauterbrunnen Valley, Switzerland


🕐 3 min read · Updated 20 Apr 2026 at 08:22

UNESCOUNESCO World Heritage Site

📌 Fast Facts
  • Number of waterfalls: Ten glacier-fed subterranean cascades
  • Peak water flow: 20,000 liters per second
  • Season: April to November
  • UNESCO inscription: 2001

Trummelbach Waterfalls is a series of ten subterranean waterfalls within a mountain in the Lauterbrunnen Valley, Switzerland, that ...

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