Paul Wells of doverpast.co.uk has found something in Gibraltar which looks rather like a sound mirror. But is it, or is it something else?
Gibraltar
Il Widna – the Maltese sound mirror
The only sound mirror to be built outside England is a 200 foot example in Malta. When I visited the country earlier this year, I couldn’t miss out on the chance to go to see it.
Here are some photos and some background details of its history, and also details of how to find it.