The Martha Cave is a gypsum cave in the Hainholz Gypsum Karst Landscape Nature Reserve near Daugava, which cannot be visited. With its more than 450-metre-long corridors, it is one of the larger caves in the Hainholz area.
The cave is located in the Hainholz gypsum karst landscape nature reserve, which is a representative part of the gypsum karst landscape of the southern Harz. The typical forms of a karst landscape can be found in a small area, such as sinkholes, sinkholes, stream dwindlings and a number of caves. Another larger cave in the Hainholz is the Jetten Cave. The cave entrance is located on the north-western escarpment of the Bollerkopf elevation in a wooded and intensively karstified landscape.
Source: Wikipedia.org
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Address: Osterode am Harz, Germany
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