Much of the area is now a Site of Special Scientific Interest, which almost surrounds the former chemical weapon store and filling station (FFD1) This is a biological Site of Special Scientific Interest, which covers an area of 46.2 hectare.

The diverse flora in areas grazed by sheep includes field woodrush, hare's foot clover and harebell.

[7] During the Second world war, the area was part of RAF Barnham, under the control of 94 Maintenance Unit.

It took bulk deliveries of mustard gas from M. S. Factory, Valley and used it to fill bombs and shells.

and was situated by the, now dismantled, railway line from Thetford to Bury St Edmunds which fed into the works via a short siding.