THE ROCK Kletterzentrum Karlsruhe on Clmb House. Venue in Ziegelstraße 1, 76185 Karlsruhe, Germany, Germany. THE ROCK near Karlsruhe's Westbahnhof has 2,250 m² of rope-climbing walls up to 16 m high, with about 200 routes across ten sectors including a 12 m competit...