Contractors working in the Castle Grounds have discovered a chamber below one of the paths. It is similar to another previously discovered, and has water running through into top of the area in which it is situated. Inside chamber there is a fireclay pipe in line with the swale above the path and an outfall into the top of the bowl.
The archaelogist has been notified and contractor has cordoned off chamber meantime.
The photographs show the view of the chamber opening from outside; and the interior of the chamber.