The fort(Napoleonic defence system) on top of Box Hill in Surrey has the look of a ditched ring behind it...whether this is residue from the building of the fort...no-one on site can tell me...though the small museum does have a collection of flint and bone tools found in the area...no actual record of precisely where on the hill they were found(strangely enough..the "curators" are unaware of the reasons for Labelliere's Grave being sited there and why he was buried upside down).