▁of ▁Blue ▁Mountains ▁National ▁Park . ▁The ▁t ough ▁heart ▁of ▁the ▁Gro se ▁Valley ▁and ▁the ▁early ▁interest ▁in ▁pres erving ▁the ▁area ▁for ▁its ▁natural ▁and ▁recre ational ▁values ▁have ▁substantial ly ▁limited ▁dist urban ces . ▁Major ▁impact s ▁from ▁resident ial ▁areas ▁and ▁industry ▁have ▁been ▁conf ined ▁to ▁the ▁rid ges ▁border ing ▁the ▁catch ment . ▁The ▁Ab original ▁sites ▁and ▁re lic s ▁recorded ▁from ▁the ▁area ▁contribute ▁to ▁an ▁understanding ▁of ▁Ab original ▁l ifest yles ▁and ▁occupation ▁of ▁the ▁sand stone ▁plate aus ▁around ▁Sydney . ▁ ▁Gro se ▁Valley ▁ ▁The ▁Gro se ▁Valley ▁is ▁a ▁rug ged ▁valley , ▁formed ▁by ▁the ▁Gro se ▁River , ▁the ▁head w aters ▁of ▁which ▁are ▁in ▁the ▁Mount ▁Victoria ▁area . ▁The ▁valley ▁is ▁located ▁between ▁the ▁Great ▁Western ▁Highway ▁and ▁B ells ▁Line ▁of ▁Road , ▁the ▁two ▁major ▁routes ▁across ▁the ▁Blue ▁Mountains . ▁The ▁majority ▁of ▁the ▁valley ▁falls ▁within ▁the ▁Blue ▁Mountains ▁National ▁Park . ▁The ▁valley ▁is ▁popular ▁for ▁bush walk ing ▁and ▁contains ▁extensive ▁w ilder ness ▁areas . ▁The ▁river ▁flows ▁to ▁the ▁Ne pe an - H aw kes bury ▁through ▁an ▁und ist urbed ▁environment ▁for ▁all ▁but ▁its ▁final ▁. ▁Con sequently , ▁the ▁Gro se ▁has ▁substantial ▁wild ▁river ▁values , ▁as ▁do ▁its ▁major ▁trib ut aries ▁such ▁as ▁W ent worth ▁Creek ▁and ▁Car mar then ▁Brook . ▁The ▁river ▁is ▁known ▁habitat ▁for ▁plat yp us ▁and ▁certain ▁h anging