Ruine Hauenstein

Ruine Hauenstein occupies a narrow, rocky ridge about 952 metres above sea level and measures roughly 55 by 40 metres across the plateau. The surviving masonry shows a building tradition of the 1200s, made from courses of roughly shaped stone laid in horizontal bands, and the overall plan reflects at least two main building phases with a Gothic character in later elements.

Approach to the site is from the north along a narrow neck that is protected by a deep, rock-cut ditch. That ditch originally could have carried a movable bridge, and today a modern wooden span crosses it. One of the defensive openings in the wall lines up with this former entrance route.

A continuous outer wall built in the 1200s follows the edge of the plateau and would once have supported a wooden fighting gallery. Inside the entrance a crescent-shaped outer ward survives as a low terrace, while the south side of that ward now remains only as a step in the terrain. The lower and upper courtyards are separated by a two-level retaining wall pierced by a round-arched gateway and followed by a stair cut into the rock. Immediately to the left after that gateway a cistern is cut into the bedrock. In the lower court the footings of a building dated to the 1400s or later are visible.

The residential tower dominates the enclosure. It is a free-standing keep of late Romanesque to early Gothic date, reported as three or four storeys tall, and nearly square in plan at about 9.9 by 10.5 metres. The tower projects roughly seven metres beyond the line of the lower bailey and was built of the same layered stonework as the curtain wall. Entry to the keep was from the south.

Inside the keep a central wall runs west to east, dividing the interior into two main rooms. The southern compartment was later cut down to a lower level and subdivided by an inserted partition that is joined to the central wall but not tied into the outer walls. Two open hearths were built into the central wall, one framed with a sandstone surround, and fragments of a late-Gothic tiled stove were recovered. Finds from the deeper southern chamber include cooking equipment and animal bones, showing that this space served as a storeroom or cellar.

On the first floor there are remains of a late-Gothic chapel and on the eastern outer face corbels indicate a former projecting apse. Windows in the tower include Gothic rectangular openings set in flat and pointed-arch recesses with side seats, and a later two-part Gothic opening with a central column has been recorded as blocked. A detached annex on the south side, not tied into the tower structure, preserves a flat-arched niche with side seats and a late-Gothic window. On the west exterior an oriel served as the tower latrine; that projecting latrine was repaired as part of the conservation work.

When excavations cleared the tower interior they revealed a compacted rubble fill one to two metres thick. Beneath that fill a sealed fire layer contained the remains of collapsed wooden floors and an assemblage of household items and tools, showing the tower’s inventory was buried in the fire. Some larger breaches in the walls were judged to result from later treasure hunting. Conservation efforts have repaired and consolidated the four partially collapsed outer faces of the tower, stabilized the internal central wall, and closed several openings in the curtain and supporting walls.