Majestic viaducts and overpasses in the Owl Mountains (Góry Sowie) are what is left of the Owl Mountains Railway constructed in the 19th and 20th c. – the only in Sudetes rack railway covered the section of over 6 kilometres. The railway went out of operation in 1931. What remains are two almost 30-meter-high viaducts spanning mountain valleys. One of them, the so-called Srebrna Góra viaduct, is a practice wall for mountaineers. It has 27 metres in altitude. The viaduct is located in the vicinity of trunk road 385, between Nowa Ruda and Ząbkowice Śląskie, near Srebrna Góra.