The Kilnsea sound mirror, described as “the only listed ‘building’ in Kilnsea“, is mentioned on The Spurn, Kilnsea and Easington Area Local Studies Group website.
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A forerunner of radar, acoustic mirrors were built on the south and northeast coasts of England between about 1916 and the 1930s. The ‘listening ears’ were intended to provide early warning of incoming enemy aircraft.
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