The staircase was constructed over two years between 1803 and 1822 using thousands of tons of local stone.
It is technically a 'staircase' flight because each lock gate leads directly into the next, rather than having a pool between them.
Thomas Telford was inspired by the design of similar locks in Sweden when engineering the Caledonian Canal.
The lock gates are massive timber structures, some weighing several tons, which are operated manually by trained canal staff.
The water level at the top of the flight is significantly higher than the surrounding river basin, requiring robust masonry to prevent leakage.
Neptune's Staircase is the longest staircase lock flight in the United Kingdom, consisting of eight interconnected locks on the Caledonian Canal. Designed by Thomas Telford and completed in 1822, the flight raises vessels 64 feet over a distance of one-quarter mile. It takes approximately 90 minutes for a boat to transit the full length of the staircase. The structure connects the canal to the Lochy River and serves as a vital passage between the North Sea and the Atlantic Ocean. The locks operate via a complex system of sluices and gates that rely on gravity-fed water displacement. It remains a functioning part of the Scottish canal network managed by Scottish Canals. The Banavie location provides direct views toward Ben Nevis and the surrounding Mamore mountain range.
The elevated position at the top of the staircase looking down the flight with the peak of Ben Nevis in the background.
Arrive when a boat is scheduled to transit to witness the lock gates in action.
Walk the full length of the towpath alongside the locks to observe the changing water levels at each stage.
Wear sturdy, waterproof footwear as the canal path can become muddy after rainfall.
Do not attempt to operate any locks, sluices, or gates, as these are restricted to authorized personnel only.
The canal is generally open to navigation from spring through autumn; transit is seasonal and dependent on water levels and maintenance schedules.
