▁a ▁vol can ic ▁cal der a ▁that ▁has ▁been ▁partially ▁filled ▁by ▁a ▁new ▁central ▁cone . ▁The ▁name ▁comes ▁from ▁Mount ▁Som ma , ▁a ▁strat ov ol cano ▁in ▁southern ▁Italy ▁with ▁a ▁sum mit ▁cal der a ▁in ▁which ▁the ▁upper ▁cone ▁of ▁Mount ▁V es u vi us ▁has ▁grown . ▁ ▁A ▁number ▁of ▁Earth ' s ▁best ▁examples ▁of ▁som ma ▁vol cano es ▁are ▁found ▁on ▁Russia ' s ▁Kam chat ka ▁Pen ins ula ▁and ▁the ▁Kur il ▁Islands ▁that ▁stretch ▁south ▁from ▁Kam chat ka ▁to ▁H ok ka id ō ▁( J apan ). ▁ ▁Some ▁examples ▁of ▁som ma ▁vol cano es ▁are ▁the ▁following : ▁▁ ▁Africa ▁ ▁P ico ▁do ▁F ogo ▁( F ogo ▁Island , ▁Cape ▁Ver de ) ▁ ▁Te ide ▁( T ener ife , ▁Can ary ▁Islands , ▁Spain ) ▁ ▁Amer icas ▁ ▁Cos ig ü ina ▁( Ch in ande ga , ▁Nic ar agua ) ▁ ▁W izard ▁Island ▁( O regon , ▁United ▁States ) ▁ ▁L ava ▁dom es ▁( Mount ▁St . ▁Hel ens , ▁Washington , ▁United ▁States ) ▁ ▁Asia ▁ ▁E be ko ▁( Param ush ir ▁Island , ▁Kur il ▁Islands , ▁Russia ) ▁ ▁Gun ung ▁Bar u ▁J ari ▁( Seg ara ▁An ak ▁cal der a , ▁Lomb ok , ▁Indones ia ) ▁ ▁Kol ok ol ▁Group : ▁Kol ok ol , ▁Berg , ▁Bor z ov , ▁Tre z