fort ▁design ▁and ▁served ▁to ▁increase ▁the ▁time ▁it ▁took ▁to ▁enter . ▁There ▁may ▁have ▁been ▁a ▁second ▁entrance ▁in ▁the ▁south - west ▁of ▁the ▁site . ▁Later ▁activity ▁on ▁the ▁site ▁has ▁caused ▁breaks ▁in ▁the ▁r amp arts , ▁but ▁the ▁remains ▁generally ▁surv ive ▁well . ▁ ▁A ▁magnet ometry ▁survey ▁of ▁the ▁interior ▁of ▁the ▁hill fort ▁in ▁ 2 0 1 0 ▁revealed ▁over ▁ 4 0 0 ▁circular ▁anom al ies ▁of ▁uncertain ▁purpose ▁( mac ula e ) ▁distributed ▁across ▁the ▁fort , ▁although ▁there ▁were ▁fewer ▁around ▁the ▁south - east . ▁Their ▁size ▁and ▁number , ▁as ▁well ▁as ▁finds ▁from ▁similar ▁features ▁in ▁previous ▁exc av ations , ▁suggests ▁they ▁may ▁have ▁been ▁storage ▁p its . ▁The ▁survey ▁also ▁discovered ▁cur ved ▁features ▁that ▁probably ▁indicate ▁the ▁presence ▁of ▁round h ouses . ▁They ▁were ▁grouped ▁close ▁to ▁the ▁r amp arts ▁on ▁the ▁north , ▁west , ▁and ▁south ▁sides . ▁There ▁are ▁signs ▁of ▁post - med ieval ▁quar ry ing ▁outside ▁the ▁main ▁entrance ▁to ▁the ▁fort . ▁Out side ▁the ▁hill fort ▁were ▁more ▁cur ved ▁anom al ies , ▁suggesting ▁round h ouses ▁in ▁a ▁settlement ▁beyond ▁the ▁r amp arts . ▁It ▁was ▁surrounded ▁by ▁a ▁d itch . ▁ ▁History ▁B urr ough ▁Hill ▁is ▁the ▁best ▁example ▁of ▁a ▁un iv all ate ▁hill fort ▁( s urr ounded ▁by ▁a ▁single ▁d itch ▁and ▁r amp art ) ▁in ▁Le ic