Abbot’s Cliff sound mirror
Date - 9 -03 -2019
Location Dover / Folkstone
Access: Yes public footpath
History :
https://www.centenarynews.com/article/first-world-war-sound-mirrors-restored-on-white-cliffs-of-dover
*The aim of a sound mirror was to detect enemy aircraft by the sound of their engines and provide warning before aircraft could be seen.
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