overview about the place The Prokopské & Dalejské údolí natural park is formed by the northernmost outcrops of the Bohemian Karst, which extends into Prague. The attractive landscape is defined by deep valleys, shaped over the millennia by local streams, with dramatic rock outcrops and some disused quarries. The rocks here are predominantly varieties of limestone, making for a rocky-steppe ecosystem and biodiverse flora and fauna. Hence, some specially protected areas have been designated. more about the place Source: Prague City Tourism Both the valleys have cycle paths running along their base, numerous hiking trails and two educational nature trails. The greatest attraction, however, is a scenic trip on a cute little railway train along a boldly engineered railway line, which crosses over the valley on imposing 20 metre high viaducts (listed as a technical monument). It is nicknamed the ‘Prague Semmering’ after the Alpine track in Austria. The historical engine departs from the central train station every Saturday, Sunday and on public holidays, and finishes up at Zličín.