A sense of mystery surrounds the keyhole-shaped kofun tombs in Japan. Although the iconic Mozu Tombs in Sakai city, Osaka have recently been awarded UNESCO World Heritage status, surprisingly little is actually known about these intriguing monuments, kept under lock and key by the Japanese government.
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Shot & Directed by: Matt Dworzańczyk
Translations: Terushi Sho, Fumi Nohara
BBC Senior Producer: Dan John
Original BBC Story: