▁flat - out ▁section , ▁followed ▁by ▁a ▁du ck , ▁a ▁short ▁section ▁with ▁minimal ▁air space . ▁The ▁passage ▁becomes ▁larger ▁as ▁it ▁approaches ▁the ▁first ▁of ▁its ▁five ▁short ▁pitch es . ▁Short ly ▁before ▁the ▁third ▁pitch , ▁a ▁high ▁a ven ▁is ▁where ▁Mar il yn , ▁the ▁third ▁entrance , ▁enters ▁the ▁system . ▁The ▁fifth ▁pitch ▁is ▁the ▁largest ▁at ▁, ▁and ▁this ▁enters ▁a ▁large ▁chamber . ▁The ▁way ▁on ▁is ▁down ▁a ▁b ould er ▁r uck le ▁and ▁along ▁a ▁sp a cious ▁passage ▁for ▁some ▁ ▁to ▁the ▁connection ▁with ▁H ens ler ' s ▁Master ▁C ave ▁in ▁the ▁main ▁G aping ▁Gill ▁System . ▁ ▁Mot ley ▁Pot , ▁( ), ▁currently ▁blocked , ▁enters ▁some ▁small ▁pass ages ▁carrying ▁the ▁main ▁stream ▁from ▁the ▁adjacent ▁sink ▁to ▁a ▁ ▁clim b ▁down ▁just ▁up stream ▁of ▁the ▁main ▁entrance . ▁ ▁Mar il yn , ▁( ), ▁dro ps ▁directly ▁down ▁a ▁couple ▁of ▁pitch es , ▁ ▁and ▁, ▁to ▁enter ▁Dis app oint ment ▁Pot ▁just ▁before ▁the ▁third ▁pitch , ▁hence ▁by pass ing ▁the ▁tight ▁me and ers ▁and ▁the ▁wet ▁craw ls . ▁ ▁A ▁number ▁of ▁foss il ▁and ▁active ▁in let ▁pass ages ▁have ▁been ▁expl ored ▁in ▁the ▁roof ▁of ▁the ▁main ▁stream way . ▁ ▁History ▁ ▁The ▁cave ▁was ▁first ▁entered ▁by ▁J . ▁Black burn - Hold en ▁and ▁Eli ▁Sim pson ▁in ▁ 1 9 1 2