Burg Rauendahl, Medieval castle ruins in Hattingen, Germany

Burg Rauendahl, also called Ruwendahl, was a lowland castle on the right bank of the Ruhr opposite Haus Kliff near Welper; its site is now thought to lie within the Henrichshütte grounds in Hattingen. At low water, remains of walls and the steps of a staircase, probably part of the castle, can still be made out.

The fortress was destroyed in 1287 by Count Eberhard I of Mark to drive out a robber knight from the Hardenberg family who controlled the region. This destruction ended the site's role as an active stronghold.

The name Rauendahl, also recorded as Ruwendahl, survives only in documents and maps, since no structure stands above ground. What visitors encounter today is the site of the vanished lowland castle, now within the grounds of the Henrichshütte ironworks in Hattingen, where the Ruhr's right bank opposite Haus Kliff once held the fortress.

The site lies on the grounds of the Henrichshütte in Hattingen, opposite Haus Kliff on the right bank of the Ruhr. The wall remains and the steps of a staircase are only visible when the river is low, so time a visit to low water.

During excavations for a coal storage facility in 1803, workers discovered ancient urns, tools, weapons, and horse equipment. These artifacts were later examined by Carl Arnold Kortum, helping reveal earlier settlement patterns at the site.