The Sun promotes holidays in Kilnsea, saying “The main tourist attraction is the Kilnsea Sound Mirror, a Grade II listed acoustic mirror used in WWI as a warning device.”
Acoustic early warning systems, spectacular remnants of a dead-end technology on the British coast
The Sun promotes holidays in Kilnsea, saying “The main tourist attraction is the Kilnsea Sound Mirror, a Grade II listed acoustic mirror used in WWI as a warning device.”