English-Hetitage
English Heritage is a registered charity that manages the National Heritage Collection. This comprises over 400 of England’s historic buildings, monuments and sites spanning more than 5,000 years of history.
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Subterranean-History
Subterranean History maintains a blog which photographs and provides information about tunnels, caves, bunkers, defences, mines and other historic sites in the South of the UK and other areas.
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Dover-Western-Heights
The Western Height Preservation Society is a volunteer run organisation which maintain the Western Heights of Dover, a massive series of Napoleonic fortifications much amended over a period of 150 years.
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Subbrit
Subterranea Britannica is a UK-based society for all those interested in man-made and man-used underground structures and space. Founded in 1974, the society (often known simply as Sub Brit) has grown to over a thousand members. Our interests cover all manner of underground sites.
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