, ▁is ▁a ▁vol cano ▁of ▁the ▁A ira ▁Cal der a . ▁The ▁Mount ▁Un zen ▁vol can ic ▁complex , ▁East ▁of ▁Nag as aki , ▁Japan , ▁compr ises ▁three ▁large ▁strat ov ol cano es ▁with ▁complex ▁structures , ▁Kin ug asa ▁on ▁the ▁North , ▁F ugen - d ake ▁at ▁the ▁East - center , ▁and ▁K us en bu ▁on ▁the ▁South . ▁ ▁N omen cl ature ▁Each ▁state / ▁country ▁seem ▁to ▁have ▁a ▁slightly ▁different ▁approach , ▁but ▁there ▁is ▁an ▁order : ▁ ▁C rat on , ▁and ▁then ▁Province ▁as ▁sections ▁or ▁regions ▁of ▁a ▁cr aton . ▁ ▁First : ▁vol can ic ▁arc , ▁vol can ic ▁bel t ▁and ▁vol can ic ▁zone . ▁ ▁Second : ▁vol can ic ▁area , ▁cal der a ▁cluster ▁and ▁cal der a ▁complex . ▁ ▁Third : ▁vol can ic ▁field , ▁vol can ic ▁system ▁and ▁vol can ic ▁center . ▁ ▁A ▁vol can ic ▁field ▁is ▁a ▁local ized ▁area ▁of ▁the ▁Earth ' s ▁cr ust ▁that ▁is ▁pr one ▁to ▁local ized ▁vol can ic ▁activity . ▁ ▁A ▁vol can ic ▁group ▁( aka ▁a ▁vol can ic ▁complex ) ▁is ▁a ▁collection ▁of ▁related ▁vol cano es ▁or ▁vol can ic ▁land forms . ▁ ▁Ne ut ral : ▁vol can ic ▁cluster ▁and ▁vol can ic ▁loc us . ▁ ▁In ▁the ▁Bas in ▁and ▁Range ▁Province ▁the ▁vol can ic ▁fields