ces ▁to ▁the ▁cave ▁system ▁were ▁g ated ▁to ▁allow ▁show ▁cave ▁management ▁to ▁control ▁access . ▁From ▁then ▁on , ▁ca vers ▁were ▁only ▁allowed ▁access ▁by ▁agreement ▁with ▁the ▁show ▁cave . ▁▁ 1 9 9 5 : ▁C rad le ▁H ole ▁tra ged y ▁Three ▁ca vers ▁died ▁on ▁a ▁trip ▁into ▁Lower ▁C rad le ▁H ole ▁on ▁ 1 5 ▁January ▁ 1 9 9 5 . ▁They ▁were ▁in ▁a ▁group ▁of ▁ten ▁ca vers , ▁mostly ▁students ▁from ▁University ▁College ▁Dublin ▁and ▁Dublin ▁Institute ▁of ▁Technology ▁c aving ▁clubs , ▁when ▁the ▁three ▁were ▁swe pt ▁away ▁by ▁fast ▁running ▁water ▁and ▁d rown ed ▁in ▁the ▁low ▁air - space ▁( or ▁" du ck ") ▁section ▁of ▁passage ▁between ▁the ▁end ▁of ▁Lower ▁C rad le ▁H ole ▁and ▁the ▁Grand ▁Gallery ▁in ▁Mar ble ▁Arch ▁C ave . ▁Those ▁killed ▁were ▁Philip ▁Marshall ▁( 2 0 ), ▁Brian ▁Patrick ▁Kennedy ▁( 2 2 ) ▁and ▁Con le th ▁C orm ican ▁( 2 1 ). ▁▁ 2 0 0 9 – 2 0 1 0 : ▁div ing ▁connections ▁In ▁ 2 0 0 9 ▁and ▁ 2 0 1 0 ▁div ing ▁connections ▁were ▁made ▁to ▁nearby ▁cave ▁systems ▁by ▁Art ur ▁K oz ł owski . ▁K oz ł owski ▁made ▁the ▁first ▁connecting ▁d ive ▁to ▁Pro d ' s ▁Pot ▁– ▁C asc ades ▁R ising , ▁dou bling ▁the ▁total ▁length ▁of ▁the ▁system ▁from ▁. ▁Sub