At Long Hill, Dover is a set of tunnels called ” Dumpy A ” ( ” Dumpy B” being Langdon Hole ). This was built as a radio station for the RAF in 1937. Both Langdon Hole and Long Hill are very much the same.
This site is now been sealed since 2006, under a few tons of chalk.
Location: Dover Condition: Now Sealed Date Of Visit: 05/07/99