Käsrinne bei Heidenheim, Tuff stream formation in Heidenheim, Germany
Käsrinne is a tuff channel that stretches roughly 150 meters down the western slope of Gelber Berg. Water flows through this natural groove and deposits calcium-rich minerals over time, creating visible basins and terraces along its course.
The Käsrinne was first recorded in writing in the 15th century. Its name comes from the chalky, cheese-like cloudiness that dissolved lime gives the water. Attempts to speed up the channel's growth later disturbed its natural development in places.
The name Käsrinne comes from the milky, cheese-like cloudiness that calcium gives the water; the channel was first recorded in writing in the 15th century. The Bavarian Environment Agency lists the site as geotope 577R018. Attempts to speed up its growth have partly and permanently disturbed the channel's natural development.
The Käsrinne is freely accessible year-round. Following the Quellenwanderweg, the spring can be reached on foot or by bike via forest roads and woodland paths. No path runs alongside the channel itself, which lies in the forest, and the porous tuff must not be walked on, dammed or broken at the edges.
Two small springs merge above the formation and continuously feed it with mineral-rich water. This steady flow allows the ongoing buildup of the distinctive calcium deposits that make the channel visible.
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