In Rydułtowy, a mining town situated between Rybnik and Wodzisław Śląski, there is the railroad tunnel which is oldest in Poland and the longest in Silesia, stretching from the housing estate of Orłowiec to the fields to the east of Czernica. The tunnel was built at the end of the 1850s for the railroad line connecting Racibórz with Rybnik and further with Katowice. It is 724 meters long. On the first days of WW2, Polish sappers blew it up. It was rebuilt in 1942.