 Ramba uchinyora ndima ino - Sunda Arc musha wemamwe makomo anoputika ane ngozi zvikuru uye anoputika munyika. Kuputika kweGomo reTambora muna 1815 paSumbawa uye kuputika kweGomo reSamalas muna 1257 paLombok kwakanga kuri pakati peakakura zvikurusa mumakore ane zviuru zviviri apfuura, kuchironga 7 pachiyero cheVEI. Sunda Arc subduction zone yaivewo nzvimbo yeimwe yemakomo makuru anozivikanwa eCenozoic, iyo VEI 8 Toba supereruptionpaSumatra, iyo yakabudisa 2,800 km3 ye magma c. 74 000 BP. Caldera yakavapo yakava Lake Toba. Ruzha rukuru zvikurusa munhau yakanyorwa rwakaitika mukati mokuputika kwaKrakatoa muna 1883 uye rwakanga rwanzwika kure. Mazana ezviuru zvavanhu akaurawa nokuputika uku uye nokumwe kuputika kwemamwe makomo anoputika, kubatanidza Papandayan, Galunggung, Merapi, Kelud, Sinabung uye Agung. 