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Fort Southwick and the D-Day Tunnels

Portsdown Hill, Hampshire

The underground nerve centre for the naval side of D-Day.

Fort Southwick is one of a chain of Victorian forts on Portsdown Hill, built to defend Portsmouth. During the Second World War, tunnels were dug deep beneath it.

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When
1944
Where
50.8600, -1.1000
Group
Secret bunkers & war sites

Visiting

The tunnels open for occasional tours. Nearby Fort Nelson is a free museum.

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