Rubuta ci gaba don wannan sakin layi - An yi imanin cewa ambaliyar ruwan Rinjani da ke haifar da wutar lantarki ta faru ne a karni na 13. An rubuta shi "a ƙarshen bazara ko lokacin rani na 1257", wannan fashewar Samalas ta 1257
yanzu ana la'akari da yiwuwar tushen babban ma'aunin sulfur da aka samo a cikin samfurori na kankara da aka warwatse kuma yana iya zama "mafi girman fashewar dutsen mai fitad da wuta tun lokacin da mutane suka koyi yin rubutu". Wataƙila babban fashewar ya haifar da yanayin sanyin duniya da kuma girbin da bai yi nasara ba. Kafin wannan fashewar, Segara Anak caldera ya kasance dutsen mai aman wuta mai suna Samalas, wanda ya fi Rinjani girma.