▁The ▁falls ▁are ▁situated ▁within ▁what ▁was ▁once ▁known ▁as ▁the ▁Sh ale ▁Creek ▁Pres erve , ▁a ▁w ilder ness ▁area ▁formerly ▁owned ▁by ▁the ▁Buff alo ▁Museum ▁of ▁Science . ▁ ▁A ▁tower ▁facility ▁used ▁for ▁fire fig h ter ▁training ▁is ▁located ▁on ▁the ▁prem ises . ▁ ▁Although ▁said ▁to ▁be ▁one ▁of ▁the ▁largest ▁county ▁par ks ▁in ▁the ▁United ▁States , ▁at ▁least ▁one ▁larger ▁county ▁park ▁is ▁located ▁nearby . ▁The ▁ ▁M end on ▁P onds ▁Park , ▁a ▁county ▁park ▁in ▁Mon roe ▁County , ▁New ▁York , ▁is ▁situated ▁approximately ▁ ▁away . ▁ ▁Gallery ▁ ▁References ▁ ▁External ▁links ▁ ▁Map ▁of ▁Ch est nut ▁R idge ▁Park ▁ ▁Ch est nut ▁R idge ▁Conserv ancy ▁ ▁Ch est nut ▁R idge ▁Park ▁on ▁Western ▁New ▁York ▁Out do ors ▁ ▁Category : P arks ▁in ▁Er ie ▁County , ▁New ▁York <0x0A> </s> ▁The ▁Ph arus ian ▁Ocean ▁is ▁an ▁ancient ▁ocean ▁that ▁existed ▁from ▁ 8 0 0 ▁to ▁ 6 3 5 ▁million ▁years ▁ago , ▁between ▁the ▁break - up ▁of ▁the ▁Rod in ia ▁super cont inent ▁and ▁the ▁start ▁of ▁formation ▁of ▁the ▁G ond w ana ▁super cont inent . ▁ ▁Open ing ▁and ▁closure ▁The ▁Ph arus ian ▁Ocean ▁opened ▁around ▁ 8 0 0 ▁million ▁years ▁ago ▁in ▁the ▁Ne opro ter oz o ic ▁era ▁after ▁rif ting ▁along ▁the ▁eastern ▁margin ▁of ▁the ▁West ▁African ▁cr aton ▁during ▁the ▁break up