In a 19th century guide book Koppenbrüller Cave is described as a "renowned show cave". Since no show cave operation is recorded at that time it may consequently be assumed that locals took interested travellers into the cave. Later Georg Lahner and Hermann Bock systematically explored the cave and as early as 1909 the first paved walkways were opened to the public. Contrary to the other two caves, Koppenbrüller Cave - geologically the "youngest" of the three show caves - is still traversed by subterranean streams.

The entry section of the cave is mostly water-free but in periods of thaw and heavy rainfall a true nature spectacle occurs: then - within minutes - the dry streambed swells and turns into a powerful ‘roaring' torrent demonstrating the tremendous power of water. Beside this outstanding nature phenomenon which depends on seasonal weather conditions, adventure trekking tours for all generations provide captivating - sometimes "squeezing" - underground experience.

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