Großer Tummler Karst Spring

After the snow melts in spring, karst water emerges from the rock hole, at times in a flood that covers the entire valley floor of the dry valley up to the Heroldsmühle. The stones in front of the rock hole were also washed out.
Since the spring runs dry the rest of the year, it is popularly known as the Hunger Well. The emergence of large amounts of water from the tumbler was previously interpreted as an ominous omen. The large Tummler rises from a fissure in the Malm Beta, which is expanded into a spring cave by dissolving the lime. The small Tummler, another karst spring that only flows in spring, is located 200m up the valley.

(Source: information board on site)

In summer, an inconspicuous black hole in the rock face, but with a considerable depth of over 18 meters. During heavy rain and when the snow melts, considerable amounts of water can be spewed out here.

Tummler is the Franconian term for periodically flowing karst springs, which are generally referred to as hunger fountains. These are springs that dry up in the dry season and flow after particularly heavy rainfall or when the snow melts.The so-called “Tummler” are something special and are definitely worth a visit. The dry valley in summer, small Tummler, large Tummler.