グローセンエーリッヒの湖・トップ19

The Gründelsloch near Kindelbrück is one of the most impressive and important karst springs in Thuringia. It was created by the dissolution of limestone in the subsoil. The resulting underground cavity collapsed in 1611, causing a sinkhole and the spring to emerge. The active karst spring, with a diameter of 22 m and a discharge of around 15,600 l per minute, has several older precursor springs that are lined up like a string of pearls from northwest to southeast in the area of the Kindelbrück fault zone and dried up again over time. Examples of these dried-up precursor springs are the Kuhborn, around 700 meters away, or the karst spring on the Steinrinne. Source: display board

The cycle path in the direction of Sondershausen is currently closed.

Benches available for resting

The hemp lake is silting up more and more and today no longer has any free water surfaces. So the bog is gradually disappearing.

Such a large source is something special.

beautiful pond. Great for a little rest.

A very good kitchen. Reservations are recommended.

The Sonder forest area has been a nature reserve since 1961 and, together with the neighboring forest areas on Oberholz and Großer Horn, is part of the European NATURA 2000 system of protected areas. The core of the area is the hemp lake, which was created by leaching rock salts in the geological subsoil. It is the largest of what were previously six sinkholes of this type. These sinkholes filled with water over a long period of time, creating lakes with no natural inflow and outflow, so they were fed solely by rainwater. (Source: https://www.nottertal-heilingerhoehen.de)