These 'sound mirrors' near Lydd in Kent were built in the late 1920s as part of Britain’s early air defence system. 🛩️ Designed to detect enemy aircraft by capturing sound waves, they provided an early warning before an attack. Advances in radar eventually made the sound mirrors obsolete, but they remain fascinating reminders of an innovative era in military technology. Today, they’re protected as scheduled monuments. | Historic England
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These 'sound mirrors' near Lydd in Kent were built in the late 1920s a…
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On the flat expanse of Romney Marsh, the giant concrete sound mirrors once formed Britain’s first early warning system. Built in the 1920s and 1930s, they could detect the drone of enemy aircraft long before radar was invented. As planes became faster, the mirrors lost their usefulness, but they remain striking reminders of pre-radar ingenuity and the tense years between the wars. Filmed near Dungeness and Greatstone, Kent. #RomneyMarsh #SoundMirrors #KentHistory #WWII #AviationHistory #Military
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