English: Waverley diamonds, squares and rectangles Had any railway passengers been sitting on the seat 150 years ago, they would have found themselves in the path of a train suddenly appearing through the hole in the wall behind them. Not that the train would have been travelling all that fast, as it would be climbing a 1 in 27 gradient through a long tunnel and the locomotive would have been left behind half a mile away. The Edinburgh, Leith & Newhaven Railway, which by that time had renamed itself the Edinburgh, Leith & Granton Railway, arrived at a station here in the north-west corner of what is now Waverley station, in May 1847. Their station, sometimes called Canal Street after a nearby road that paralleled a channel cut in the 18th century to drain the Nor' Loch, where Princes Street Gardens are today, was at right-angles to the main North British Railway station and the trains departed by free-wheeling down the gradient, hopefully controlled by a brakesman. Returning trains were hauled up the slope by a stationary steam engine. The station was closed in 1868 when newer lines enabled the Granton trains to be diverted via Abbeyhill. The tunnel still survives, a portion behind the metal grille housing ventilation equipment for the adjacent subsurface Princes Mall shopping centre.