Smečenská rokle, Natural monument in Smečno, Czech Republic.

Smečenská rokle is an erosion gorge cut by the Svinařovský stream into the Džbán marl plateau, about 2.5 km southwest of Smečno. Its walls, roughly 7 m deep and up to 4 m apart at the narrowest, expose a complete profile of Cretaceous Džbán-type marls and sandstones. The ravine widens downstream to form a canyon-like valley.

Smečenská rokle was declared a protected natural formation by the District National Committee in Kladno in 1987 under Act No. 40/1956. The same decree also set aside Cikánský dolík and Pašijová draha. Since Act No. 114/1992, the site has been classed as a natural monument protecting the Džbán Cretaceous profile down to the Carboniferous sediments.

The name Ovčín (sheepfold) on the farmstead below the gorge points to former forest grazing on these slopes. Old oaks and lindens survive from a former tree avenue on the southern side. The protected area is now overgrown with invasive black locust and Japanese knotweed.

Paths run through the canyon but they are not always clearly marked and require careful footing. The nearest bus stops are only a short walk from the entrance and offer a practical starting point for your visit.

The original trees here are older than in most nearby forests because the steep walls made traditional logging impossible. Visitors often notice the forest looks denser and wilder than the managed forests surrounding it.