aming ▁The ▁po ort ▁was ▁named ▁after ▁a ▁" Mr ▁How ison " ▁but ▁it ▁was ▁miss p elt ▁by ▁St ap leton ▁and ▁H ew itt ▁as ▁How ies on ▁and ▁their ▁error ▁has ▁been ▁used ▁ever ▁since ▁for ▁the ▁stone ▁tool ▁industry ▁named ▁after ▁it . ▁Note ▁the ▁site ▁is ▁always ▁sp elled ▁with ▁an ▁apost rop he ▁but ▁the ▁period ▁can ▁be ▁sp elt ▁vari ably ▁with ▁and ▁without ▁it . ▁ ▁Description ▁The ▁rock ▁shelter ▁occurs ▁in ▁a ▁hill ▁on ▁the ▁north ▁side ▁of ▁the ▁How ies on ' s ▁Po ort ▁containing ▁the ▁main ▁road ▁into ▁Graham st own ▁from ▁Port ▁Elizabeth . ▁The ▁cave ▁is ▁half way ▁up ▁a ▁cl iff ▁and ▁is ▁ ▁deep ▁and ▁ ▁wide ▁at ▁the ▁mouth , ▁with ▁a ▁large ▁Real ▁Y ellow wood ▁tree ▁growing ▁in ▁the ▁depos it ▁and ▁" b ent ▁horizontal ▁with ▁the ▁floor ▁to ▁allow ▁its ▁branches ▁to ▁spread ▁into ▁the ▁open ▁at ▁the ▁mouth ▁of ▁the ▁shelter ". ▁ ▁The ▁original ▁How ies ons ▁Po ort ▁period ▁remains ▁were ▁covered ▁very ▁slowly ▁due ▁to ▁the ▁cave ' s ▁position ▁half way ▁up ▁the ▁cl iff ▁and ▁to ▁wind ▁clear ance . ▁ 2 0 , 0 0 0 ▁years ▁ago , ▁however , ▁a ▁rock ▁fall ▁acted ▁to ▁protect ▁the ▁depos its ▁near ▁the ▁front ▁from ▁wind ▁er os ion . ▁ ▁Ex c av ation ▁It ▁was ▁exc av ated ▁in ▁the ▁late ▁ 1 9 2 0 s , ▁and ▁then ▁again ▁in ▁