Rubuta ci gaba don wannan sakin layi - Raijinyama kofun shine mafi girma a yankin Tōhoku kuma yana saman dutsen Natori inda aka tattara manyan tumulus da yawa, suna kallon Filin Sendai. Yana da tsawon mita 168, kuma an taɓa kewaye shi da wani ɓangare. An gina shi a matakai, a wani ɓangare ta amfani da layin dutsen na halitta, kuma an taɓa rufe shi da "fukiishi". Wani ɓangare na tumulus na baya ya rushe a lokacin girgizar kasa ta 2011 Tōhoku
, yana nuna cewa ya ƙunshi akwatin gawa na yumbu ko akwatin gawa na katako a cikin ɗakin binnewa.