The #soundmirror emerging from the chalk at fan bay. @WCCPnews @UpontheDowns #whitecliffs pic.twitter.com/13NPuVdWJy
— Paul Holt (@pholt3) September 27, 2014
Acoustic early warning systems, spectacular remnants of a dead-end technology on the British coast
The #soundmirror emerging from the chalk at fan bay. @WCCPnews @UpontheDowns #whitecliffs pic.twitter.com/13NPuVdWJy
— Paul Holt (@pholt3) September 27, 2014