Mezue nkebi ahịrịokwu na-esonụ: N'elu ugwu ahụ, e nwere nnukwu ọdọ mmiri a na-akpọ Ọdọ Mmiri Eluigwe. A kpụrụ caldera site na VEI 7 "Millennium" ma ọ bụ "Tianchi" mgbawa nke 946, nke gbawara gburugburu tephra. Nke a bụ otu n'ime mgbawa kachasị ukwuu na nke kachasị ike na afọ 5,000 gara aga (n'akụkụ mgbawa Minoan, mgbawa Hatepe nke Ọdọ Mmiri Taupo n'ihe dị ka AD 180,
1257 mgbawa nke Ugwu Samalas nso Ugwu Rinjani na 1815 mgbawa nke Tambora).