Rock formations of North Rhine-Westphalia

The Externsteine () is a distinctive sandstone rock formation located in the Teutoburg Forest, near the town of Horn-Bad Meinberg in the Lippe district of the German state of North Rhine-Westphalia. The formation is a tor consisting of several tall, narrow columns of rock which rise abruptly from the surrounding wooded hills. The Hermannsweg, a long-distance hiking trail, passes through the formation.