Because they are on an island surrounded by the waters of a deep gravel pit, the sound mirrors at Denge are only accessible on guided walks (believe me, this is true, I’m not making it up!).

Dates of guided walks are listed on the Romney Marsh Countryside Project website. I’ve been twice, and the “Echoes from the Sky” walks, led by Dr Scarth, author of the now out-of-print book and world expert on acoustic mirrors, are well worth doing – and very popular. Getting there by public transport requires a bit of planning, but is possible. Alternatively, the walks start from a large car park.