Site of Special Scientific Interest | |
![]() The eastern portal of the tunnel | |
Location | Hampshire |
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Grid reference | SU 713 516[1] |
Interest | Biological |
Area | 0.4 hectares (0.99 acres)[1] |
Notification | 1985[1] |
Location map | Magic Map |
![]() Inside the Greywell Tunnel | |
Overview | |
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Location | Greywell |
Coordinates | 51°15′38″N 0°58′44″W / 51.2605°N 0.978849°W |
OS grid reference | SU713517 |
Status | Disused (collapsed) |
Waterway | Basingstoke Canal |
Operation | |
Constructed | brick |
Opened | 1794 |
Closed | 1932 |
Technical | |
Length | 1,230 yards (1,120 m) |
Towpath | no |
Boat-passable | no |
Greywell Tunnel is a disused tunnel on the Basingstoke Canal near Greywell in Hampshire, which is now a 0.4-hectare (0.99-acre) biological Site of Special Scientific Interest.[1][2]