Neptune's Staircase

Neptune’s Staircase stands at Banavie, just north of Loch Linnhe in the Scottish Highlands. It is a flight of eight locks on the Caledonian Canal, built between 1803 and 1822 under Thomas Telford’s direction. The lock gates now weigh 22 tons each and need a team of at least three keepers to operate. Before mechanisation, each gate was turned by hand using capstans that required 126 full revolutions for a boat to pass through. The original capstan bases remain in place, though the capstans themselves have been removed. The staircase lifts boats 64 feet in about ninety minutes, making it the longest staircase lock in Britain. Each lock chamber measures 180 feet by 40 feet, large enough for substantial vessels. The system was designed to reduce transit times from half a day to the current schedule by using hydraulic rams and push-button control. Scottish Canals maintains the site today, ensuring smooth passage for boats moving between sea and inland waters. Visitors find a striking engineering landmark set against the Highland landscape. The flight of locks stretches along the canal, framed by the surrounding hills and Loch Linnhe. Remains of the original quarry at Corpach Moss can still be seen nearby, where stone for the locks was once cut. The swing bridges at the foot of the flight carry road and rail traffic, adding to the scene. The restored masonry and modern gates show how the structure has been preserved for future use.