Paulsgrove chalk pit as it is today (2001). 

The chalk face was painted with camouflage during WWII to prevent it being used as a navigation point by the Luftwaffe. The last major quarrying took place here in the 1970s to provide construction material for the building of the M275. This resulted in the lowering of the quarry floor by some 40 feet as compared to its wartime level.

A Portsmouth Home Guard Company demonstrates an anti-personnel mortar at Paulsgrove Chalk Pit.