0 1 ▁los es ▁more ▁of ▁its ▁e aster ly ▁tra jection . ▁Here , ▁it ▁serves ▁as ▁the ▁northern ▁termin us ▁of ▁M ango ▁Road , ▁and ▁later ▁St acy ▁Road , ▁Sar ge ant ▁W ilder ness ▁Memorial ▁Park , ▁and ▁extension ▁of ▁Hills borough ▁River ▁State ▁Park . ▁After ▁passing ▁by ▁a ▁field ▁used ▁for ▁the ▁T ampa ▁Mach in ery ▁Au ctions , ▁Route ▁ 3 0 1 ▁officially ▁runs ▁along ▁the ▁eastern ▁end ▁of ▁Hills borough ▁River ▁State ▁Park , ▁which ▁it ▁will ▁eventually ▁enter . ▁The ▁same ▁former ▁rail road ▁line ▁that ▁was ▁encountered ▁near ▁Har ney ▁Road ▁is ▁visible ▁along ▁the ▁east ▁side ▁of ▁US ▁ 3 0 1 ▁throughout ▁the ▁park ▁and ▁beyond . ▁The ▁last ▁moder ate ▁intersection ▁US ▁ 3 0 1 ▁enc oun ters ▁before ▁finally ▁entering ▁the ▁park ▁is ▁the ▁northern ▁termin us ▁of ▁Mc Int osh ▁Road . ▁One ▁resident ial ▁area ▁can ▁be ▁found ▁on ▁a ▁minor ▁side ▁road ▁off ▁to ▁the ▁left , ▁but ▁the ▁rest ▁of ▁the ▁road ▁is ▁surrounded ▁by ▁park land . ▁US ▁ 3 0 1 ▁leaves ▁the ▁park ▁almost ▁as ▁instantly ▁as ▁it ▁cross es ▁the ▁Pas co ▁County ▁line . ▁ ▁Pas co ▁County ▁After ▁US ▁ 3 0 1 ▁enters ▁Pas co ▁County , ▁a ▁slight ▁curve ▁to ▁the ▁right ▁is ▁a ▁clear ▁indic ation ▁that ▁ 3 0 1 ▁is ▁entering ▁Ze ph yr h ills . ▁Here , ▁the ▁road ▁is ▁known ▁as ▁Fort ▁King ▁Highway ▁and ▁Gall ▁Bou