Devil's Furrow — Wikipedia

According to an old Czech legend, the Devil's Furrow (Czech: Čertova brázda) was a distinct line in the landscape, allegedly connecting the place of St. Procopius's activity in Sázava Monastery with his birthplace, 21 km away in Chotouň. The furrow is no longer visible in the terrain, and the interpretation of the various relics found along its supposed route was a matter of debate. Based on recent research, it appears that the foundation of the legend lies in a 5.5 km long (completely straight) linear earthwork (rampart with two ditches) that controlled a significant east–west...