South Foreland Battery occupied a key position on the White Cliffs between Dover and the village of St. Margaret's. It was built at the beginning of WW2 and consisted of four 9.2" guns on a large site with many auxiliary buildings. The majority of the surface buildings have now been demolished but many underground structures still survive. The magazines for No.1 and No.4 guns were located in underground reinforced concrete rooms; No.2 and No.3 guns were served by buried surface magazines. Two deep underground shelters were built in 1941 and take the form of long parallel tunnels accessed by inclined entrances on the surface, lined with corrugated steel sheeting throughout. Separate underground Fortress and Battery Plotting Rooms also exist on the site, but have been heavily vandalised. The site is now on open land and has been largely reclaimed by nature, although various fragments of concrete serve as reminders of the site's importance during the Second World War.
This battery is located on open land, with some interpretation boards explaining the site's wartime importance. Entrances to underground workings grilled 2013, access continues to be available for interested groups, arranged through the key holders.
Update 13-02-14 - I have been kindly supplied with some old photos of the battery prior to and during demolition, many thanks to Brian Brooks Payne.
Deep Shelter 1 Entrance during demolition
Now demolished battery buildings
Deep Shelter 1 entrance
Inside the entrance
Plan of South Foreland Battery
Observation post on the cliff edge
Inside the first deep shelter
Air Filtration Trunking
Incline up to entrance
Entrance to the second Deep Shelter
Inside one of the two main passages
Junction of the tunnel
Passage to magazine for No.1 Gun
Entrance to Magazine
Ladder down to Fortress Plotting Room
Inside the Plotting Room
Passage to Emergency Escape Hatch
Air Filteration Plant
'Plotting Room' legend above door in Battery Plotting Room
Entrance to the Magazines for No.2 & No.3 Guns