▁stock ade ▁area . ▁It ▁has ▁been ▁suggested ▁that ▁it ▁was ▁standard ▁pract ise ▁for ▁a ▁g arrison ▁or ▁military ▁unit ▁to ▁construct ▁a ▁we ir ▁on ▁a ▁slow ▁moving ▁cre ek ▁once ▁a ▁permanent ▁camp ▁was ▁decided ▁upon . ▁However , ▁the ▁physical ▁and ▁document ary ▁evidence ▁does ▁not ▁support ▁this ▁claim ▁at ▁this ▁time . ▁ ▁Description ▁ ▁The ▁stock ade ▁and ▁sites ▁are ▁located ▁on ▁the ▁line ▁of ▁the ▁original ▁Great ▁South ▁Road ▁between ▁Tow r ang ▁Road ▁and ▁Car rick ▁Road , ▁adjacent ▁to ▁the ▁current ▁H ume ▁Highway ▁and ▁about ▁ 5 km ▁south - west ▁of ▁Tow r ang . ▁The ▁complex ▁compr ises ▁a ▁bridge ▁and ▁seven ▁cul ver ts ▁up ▁to ▁ 1 . 5 km ▁to ▁its ▁west ; ▁a ▁stock ade ▁and ▁pow der ▁magazine ▁on ▁the ▁northern ▁side ▁of ▁the ▁H ume ▁Highway ▁about ▁ 4 . 5 km ▁south - west ▁of ▁Tow r ang ▁and ▁east ▁of ▁the ▁Highway ' s ▁intersection ▁with ▁Green wich ▁Park ▁Road . ▁The ▁bridge ▁and ▁six ▁cul ver ts ▁are ▁located ▁on ▁the ▁southern ▁side ▁of ▁the ▁H ume ▁Highway ▁and ▁are ▁accessed ▁via ▁the ▁highway ▁rest ▁area ▁and ▁its ▁access ▁road . ▁The ▁road , ▁b oll ards , ▁rest ▁area , ▁scr ub ▁and ▁f encing ▁all ▁contribute ▁to ▁a ▁sense ▁of ▁dis joint ed ness ▁of ▁these ▁items ▁as ▁a ▁group , ▁although ▁some ▁parts ▁of ▁the ▁road ▁can ▁still ▁be ▁followed . ▁This , ▁together ▁with ▁sign age , ▁a