Climbing "Tunelář" (grade 6) in "Tunel" is a classic Czech climbing experience. The route, likely named for its location in (or near) a tunnel, presents a solid, moderately challenging climb. The rock is typically good, with well-defined holds. The grade 6 indicates a climb suitable for experienced climbers who are comfortable with consistent holds and some technical moves. Expect a satisfying ascent and a great view, if the tunnel allows!