Another view of the first (northeastern) buried reserve. See also here.
The hatch in the foreground may have been for escape purposes, since it is situated at the opposite end of the buried building from the main hatches. However, unlike the main hatches, this one does not seem to have any blast protection.
There are some more pictures of the buried reserves here but I am not sure exactly what they are of.
Peter Facey, Winchester, England
20151017 originated