Long before the Battle of Hogwarts, there stood a bridge. At first, appearing derelict, the bridge was constructed of wooden beams which extended to the bottom of the ravine it was built over. The bridge starts at one end of the Clock Tower Courtyard and finishes just outside of Sundial Garden. The bridge was destroyed during the Battle of Hogwarts under the orders of Minerva McGonagall, but was rebuilt in 1999.