This arch is located south of the village of Bärenthal in the Upper Danube Nature Park in Baden-Württemberg. From Bärenthal take the K5908 road in the direction of Beuron. Approximately 1.4 km after the junction of the L440 in the direction of Fridingen, there is a parking lot on the left (UTM 32U 495045 5323152). From there, hike a short distance north, then follow the narrow path to the Längenfels cave to the left. Immediately afterwards you come across the Lengenfels passage cave.
It's dimensions: Span: 13,50 m; Height: 2,30 m. UTM Coordinates: 32U 494995 5323241
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