Brindley Tunnel - April 2015
Explored with Dartian
Built in the 1740's by the renowned engineer James Brindley, water from the Ringley Weir ran in to the tunnel and down an inverted u-shaped siphon which travelled 10 metres underneath the River Irwell, and on for almost 2km before it reached the waterwheel which powered the pumps for the colliery.
The original tunnel was 800 yards long but has since been reduced to around 300 yards with the building of the Ringley water-works above. The tunnel is driven through sandstone and is brick-lined in places, the shaft is currently flooded. Although only short, the tunnel is brimming with fantastic features and is an engineering masterpiece.
History and more information of the colliery can be found here.
On with the pictures
The flooded shaft that leads under the Irwell
Thanks for looking