2018 Denge sound mirror open days

There will be two open days at the Denge sound mirrors this year. The open days are scheduled for 10:00 to 15:00 on Saturday 7 July 2018 and Saturday 1 September 2018.

Denge sound mirror open day 2016

There will be a cash-only charge of £5 per adult, £2.50 per child (RSPB members free).

There are more details on the Romney Marsh website events listings for July 2018 and September 2018.

The open days are generally the onkly way for the public to access the Denge listening ears close up, although there have also been some photography days, so it might be worth keeping an eye out, if you are seriously interested.

(Please note that andrewgrantham.co.uk has no connection to the open day, the RSPB or anything else! Please check the details with the RSPB before visiting)

Sunderland sound mirror goes viral

This tweet about the Sunderland sound mirror was a little bit popular!

Sound mirrors one of “12 intriguing places listed by Historic England in 2017”

Accoustic Mirrors, Fan Bay, St Margaret’s at Cliffe, Kent

The threat of aerial warfare in the 20th century provoked new systems of strategic air defence. Acoustic mirrors reflected the sound of distant aircraft onto a focal point where it was detected. The examples at Fan Bay are unusual as they are carved from the cliff face. The eastern mirror is one of the earliest, dating from about 1916. A second mirror dates from the early 1920s. The development of radar in the 1930s rendered sound mirrors obsolete. (Scheduled Monument. List Entry Number: 1442235)

Source: 12 intriguing places listed by Historic England in 2017