Propustek nedokončené železnice Děrné sever, Stone railway culvert in Děrné, Czech Republic

Propustek nedokončené železnice Děrné sever is a stone vaulted culvert in the northern part of Děrné, a local part of Fulnek. It is one of two stone vaulted culverts in the area, built as part of the unfinished Opava–Fulnek railway. The culvert carries an unnamed tributary of the Gručovka stream beneath the planned railway embankment.

The culvert was built as part of the Opava–Fulnek line, begun by the Moravian-Silesian Central Railway in summer 1873 to link Silesian Opava with Trenčín in Upper Hungary. The Vienna Stock Exchange crash of May 1873 halted work after half a year, and construction stopped for good in 1874. The culvert was never used by trains.

The stone vault shows engineering techniques from the 19th century that were common in this region at that time. Visitors can experience how important transportation projects were for people and how they shaped the landscape.

The culvert lies in the northern part of the Děrné cadastral area, in woodland reached only on foot along forest paths. An unnamed tributary of the Gručovka stream flows beneath the arch. The spring U Tunelu stands nearby and serves as a landmark for finding the spot.

The culvert is one of two stone-vaulted culverts in the northern part of Děrné's cadastre; its counterpart, Děrné jih, lies to the south. In spring 2026 students of the Mendel Grammar School in Opava drafted a seven-stop educational trail along the unfinished railway bed for the First Lego League competition.