Denge Marsh , also spelled Dengemarsh and occasionally called the Denge, is a part of

Romney Marsh Romney Marsh is a sparsely populated wetland area in the counties of Kent and East Sussex in the south-east of England. It covers about . The Marsh has been in use for centuries, though its inhabitants commonly suffered from malaria until the ...

Kent Kent is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Essex across the Thames Estuary to the north, the Strait of Dover to the south-east, East Sussex to the south-west, Surrey to the west, and Gr ...

. Its north-west boundary is the town of

Lydd Lydd is a town and electoral ward in Kent, England, lying on Romney Marsh. It is one of the larger settlements on the marsh, and the most southerly town in Kent. Lydd reached the height of its prosperity during the 13th century, when it was a ...

; to the south-east is Denge Beach and

Dungeness Dungeness (, ) is a headland on the coast of Kent, England, formed largely of a shingle beach in the form of a cuspate foreland. It shelters a large area of low-lying land, Romney Marsh. Dungeness spans Dungeness Nuclear Power Station, the ham ...

.One-inch map of Great Britain: Sheet 184, Hastings. Ordnance Survey 1969.

History

In Roman times, the area which is now Romney Marsh was under water.

Lympne Lympne (), formerly also Lymne, is a village on the former shallow-gradient sea cliffs above the expansive agricultural plain of Romney Marsh in Kent. The settlement forms an L shape stretching from Port Lympne Zoo via Lympne Castle facing Ly ...

and

Appledore Appledore may refer to: Places England * Appledore, Kent ** Appledore (Kent) railway station * Appledore, Mid Devon, near Tiverton * Appledore, Torridge, North Devon, near Bideford United States * Appledore Island, off the coast of Maine In fic ...

, which are now on the northern edge of Romney Marsh, were coastal ports. There were islands in the area, including Lydd. Denge Marsh, south-east of Lydd, was one of the earliest parts in the area to be reclaimed from the water by drainage; this is recorded in a charter of A.D. 744. Reclamation of the adjacent area, the present-day Walland Marsh which is to the north-west of Lydd, continued through the Middle Ages. Drainage dykes, known locally as sewers, were built. History of Romney Marsh
The Romney Marsh.net, accessed 3 Nov 2014.

Sound mirrors

At the north-eastern edge of Denge Marsh, near

Greatstone-on-Sea Greatstone is a village on the coast of Romney Marsh in Kent, England. It is east of the town of New Romney and split between the civil parishes of New Romney and Lydd. Although permission was given for a company to construct large numbers of ho ...

, stand the

sound mirrors ''Sound Mirrors'' is the fifth studio album by Coldcut. It was released in January 2006. Four singles were released from the album including the Top 75 hit "True Skool" with Roots Manuva. Track listing CD #" Man in a Garage" (featJohn Ma ...

, also known as acoustic mirrors at

RAF Denge Royal Air Force Denge or more simply RAF Denge is a former Royal Air Force site near Dungeness, in Kent, England. It is best known for the early experimental acoustic mirrors which remain there. The RAF had begun research into acoustic mirrors ...

: they are large concrete structures, built as an experiment between 1928 and 1930. Sound could be focussed onto microphones, so giving an early warning of the approach of enemy aircraft. The invention of

radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...

made them obsolete.History:Sound Mirrors
greatstone.net, accessed 3 Nov 2014.

References

{{coord, 50, 56, 15, N, 0, 55, 15, E, type:landmark_region:GB, display=title Marshes of England Landforms of Kent