▁to ▁electric ity ▁in ▁ 1 9 9 2 ▁and ▁the ▁original ▁range ▁of ▁ 1 7 ▁na ut ical ▁miles ▁was ▁reduced ▁to ▁nine ▁in ▁ 2 0 1 1 . ▁The ▁head land ▁is ▁within ▁the ▁Is les ▁of ▁Sc illy ▁Area ▁of ▁Out standing ▁Natural ▁Beaut y ▁and ▁part ▁of ▁the ▁Heritage ▁Coast . ▁It ▁is ▁also ▁a ▁Ge ological ▁Conserv ation ▁Review ▁site ▁for ▁its ▁Qu atern ary ▁ge omorph ology ▁and ▁was ▁first ▁designated ▁a ▁Site ▁of ▁Special ▁Scient ific ▁Interest ▁( SS SI ) ▁in ▁ 1 9 7 1 ▁for ▁both ▁its ▁bi ological ▁and ▁ge ological ▁interests . ▁ ▁P orth el lick ▁C ove ▁ ▁P orth el lick ▁C ove ▁contains ▁a ▁mem orial ▁to ▁mark ▁the ▁spot ▁where ▁the ▁body ▁of ▁Admir al ▁Sir ▁Cloud es ley ▁Sh ov ell ▁was ▁was hed ▁ash ore ▁after ▁the ▁ 1 7 0 7 ▁Sc illy ▁naval ▁dis aster . ▁This ▁was ▁one ▁of ▁the ▁greatest ▁mar itime ▁dis aster s ▁in ▁British ▁history , ▁ ▁when ▁four ▁ships ▁( Associ ation , ▁Fire brand , ▁Rom ney ▁and ▁E agle ) ▁with ▁nearly ▁ 2 , 0 0 0 ▁sail ors ▁were ▁lost . ▁ ▁Other ▁locations ▁The ▁following ▁is ▁a ▁list ▁of ▁some ▁other ▁locations ▁on ▁St ▁Mary ' s : ▁▁ ▁Lower ▁Mo ors ▁Nature ▁Reserve ▁ ▁High er ▁Mo ors ▁Nature ▁Reserve ▁( see ▁P orth ▁Hel lick ) ▁ ▁Holy ▁V ale ▁ ▁P orth lo o ▁Beach ▁