Greywell Tunnel
Built in the 18th century, and now the largest roost for hibernating bats in Britain.

šŸ“œ 18th-century tunnel, now Britain's largest hibernating bat roost.
šŸ” A site of special scientific interest, its eastern portal is Grade II listed.

Why Go

šŸ¦‡ Observe thousands of bats in winter
šŸš¶ Enjoy a scenic walk along Basingstoke Canal
šŸ’§ See crystal clear waters with underwater flora
šŸ° Visit nearby Odiham Castle

Why Avoid

ā›” No public access inside the tunnel
šŸš§ Portions of the tunnel are collapsed and blocked

šŸ…æļø Parking

Available at Hook Rd/Deptford Ln intersection or end of Tunnel Ln.
Consider a scenic 1-mile walk from Warnborough Lift Bridge.

Last updated 1 day ago

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