Reviews Hell’s Mine Bikers’ Cave We invite you to the motorcycle club “Pekelné doly” in the unique environment of the largest sandstone underground in Europe, in the beautiful nature of the Lusatian Mountains near the recreation area Máchovo jezero, or Column in Bohemia. How do you rate this place? Click on a star to rate it! Submit Rating Average rating 0 / 5. Vote count: 0 No votes so far! Be the first to rate this post.