On 3-4 May 2014 volunteers from the Dover Archaeological Group, the Canterbury Archaeological Trust and the National Trust dug several trenches to locate the mirrors, which have been buried since the 1970s. They found that “the Fan Hole sound mirror complex remains around 90% complete, preserved below dumped 1970s soil and rubble.”
Even better, “It looks likely that only fairly limited restoration work would be required to stabilise these structures and leave them open for permanent display”. For now, excavation has stopped until a topographical survey and planning application have been completed.
Visit Fan Hole sound mirrors: An archaeological dig for full details and photos.