Riesending cave

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The Riesending cave (German: Riesending-Schachthöhle) is a pit cave in the Untersberg near Berchtesgaden, Germany and Salzburg, Austria. At 1,148 m it is the deepest and at 19,300 m the longest cave in Germany. It was discovered in 1996. In June 2014 it became well known because of a large effort to rescue a lead speleologist.