Froghall tunnel (76 yards)
This is one of the most restrictive tunnels still in use on the canal system today. Very few boats are low enough to get through hence the warnings and measuring boards at the entrance and at the final lock before entering the tunnel pound.
It was opened in 1779, is brick lined, one way only and has no towpath.
The measuring devices at the entrance show how the profile of the tunnel changes further in.
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| Warning about restricted height of tunnel 2 miles ahead |
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| Height indicator board in last lock before tunnel |
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| West portal |
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| East portal |
Leek tunnel (130 yards)
This tunnel is in a beautiful location situated near the town of Leek in Staffordshire. This part of the Caldon canal is called the Leek branch and was built as a feeder to supply water to the main canal. It was also used for freight traffic.
The tunnel was opened in 1796 and is stone lined.
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| South west portal |
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| South west portal |
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| South west portal |
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| North east portal |
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| North east portal |
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