Sound mirrors on the Kent History Forum. There is lots of other good stuff on the site, too.
- Abbot’s Cliff. Including an aerial photo.
on the last official walk … there was round 300 hundred of us.
- Fan Hole, near Dover.
- Joss Gap (Kingsgate).
Joss bay had two sound mirrors one being a slab, this was cut into the cliff near by the castle keep hotel , now replaced by flats.a slight indentation can still be seen near the top of the cliff. Checking the site where the round mirror was, which was a timber frame rendered. a few years ago the telephone cable blocks were still in place.
- Warden Point. With a good 1978 photo of it about to go over the cliff.