"; ▁also ▁known ▁as ▁K et rop ill án ) ▁is ▁a ▁strat ov ol cano ▁located ▁in ▁the ▁La ▁Ara uc an ía ▁Region ▁of ▁Chile . ▁It ▁is ▁situated ▁between ▁Vill arr ica ▁and ▁Lan ín ▁vol cano es , ▁within ▁Vill arr ica ▁National ▁Park . ▁Ge olog ically , ▁Qu et rup ill án ▁is ▁located ▁in ▁a ▁t ect onic ▁bas ement ▁block ▁between ▁the ▁main ▁traces ▁of ▁Li qui ñ e - Of qui ▁F ault ▁( to ▁the ▁west ) ▁and ▁Re ig ol il - Pi ri h ue ico ▁F ault ▁( to ▁the ▁east ). ▁ ▁The ▁vol cano ▁consists ▁of ▁one ▁strat ov ol cano ▁with ▁a ▁sum mit ▁cal der a , ▁and ▁is ▁constructed ▁within ▁a ▁field ▁of ▁smaller ▁cent res ▁and ▁a ▁larger ▁cal der a . ▁It ▁was ▁active ▁during ▁the ▁late ▁Ple ist oc ene ; ▁some ▁large ▁er u ptions ▁occurred ▁during ▁the ▁Hol oc ene ▁as ▁well . ▁ ▁Ge ology ▁and ▁ge ography ▁▁ ▁Qu et rup ill án ▁lies ▁on ▁the ▁border ▁between ▁the ▁Los ▁R ios ▁Region ▁and ▁the ▁La ▁Ara uc an ía ▁Region , ▁in ▁the ▁Southern ▁Vol can ic ▁Zone . ▁T ogether ▁with ▁Vill arr ica ▁and ▁Lan ín ▁it ▁forms ▁a ▁north west - s out heast ▁alignment ▁of ▁vol cano es , ▁which ▁may ▁be ▁a ▁trans current ▁fault . ▁The ▁Cord ill era ▁El ▁Mo cho ▁and ▁Qu in qu il il ▁vol cano es