Share this postKeyhole-shaped tumuli in Sakai, Japandailyoverview.substack.comCopy linkFacebookEmailNoteOtherKeyhole-shaped tumuli in Sakai, JapanOverviewSep 01, 2019Share this postKeyhole-shaped tumuli in Sakai, Japandailyoverview.substack.comCopy linkFacebookEmailNoteOtherShareSource imagery: Maxar TechnologiesFollow Daily Overview here:Instagram | Facebook | Tumblr | Twitter