Wernloch, Stone quarry and archaeological monument in Forst Kleinschwarzenlohe, Germany.

Wernloch is a stone quarry and archaeological ground monument in Forst Kleinschwarzenlohe near Wendelstein in Bavaria. The site displays exposed rock layers and visible traces of former extraction work preserved in the landscape.

Wernloch is first documented in 1236 in connection with quarrying rights. For centuries sandstone was cut between Wendelstein and Worzeldorf for Nuremberg's medieval buildings; the hard Wendelsteiner Quarzit went into millstones, canal works, towers and city walls. From 1471 to 1806 the quarries belonged to Nuremberg patrician families. The Vordere and Hintere Wernloch were worked until the early 19th century.

The quarry shows traces of human activity spanning different time periods, visible in the rock walls and ground. These remains tell how people extracted stone here over centuries and shaped the local landscape.

The site is accessible via paths through the forest area and can be visited during walks in the region. Visitors should wear sturdy footwear and remember that it is a protected archaeological monument.

The sandstone from Wernloch was floated down the Schwarzach and Rednitz on rafts, sometimes on low-grade firewood and, for a separate charge, on valuable construction timber. The ropes had to be returned immediately and the raftsmen paid separately. Wendelstein millstones were exported across the European watershed as far as Hungary and Turkey.