Yes, the cold water geyser in Wallenborn!

When there are special geological conditions in the ground underneath sparkling springs like for example cavities along fissures or strata, then spectacular things can happen.

This is what has happened at the “bubbling spring” in the village whose name means the same thing, Wallenborn. A natural cavity underneath the spring slowly fills with rising carbon dioxide. When the cavity is full, the gas is suddenly emptied into the head of the spring. The water begins to “bubble” and shoots 2 to 3 m up in the air. This process repeats itself regularly, around every 30 minutes.