Sound intensity's measured in Decibels (dB). An logarithmic scale where an increase of 10 dB gives an apparent doubling of loudness...more
Bombing Decoy Bunker
You can find this impressive site on top of the Pen y Lan ridge. Ships in the Bristol Channel used this landmark to find their way and it was even marked on shipping charts.
The building on the site was built to generate power and ignite incendiary fires for this decoy bunker. Ready to operate at short notice, two men would sit in this small building at night, then light it up to give the illusion it was being used.
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