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Uploaded on Feb 24, 2010
ADEYTO presents rare backstage shots of the preparation to launch the Guiness Book records holder, world's biggest firework, the Yon-Shaku-Dama of Katakai. It has a diameter of 120cm and weights 420kg. Upon exploding, the diameter reaches 800 meter.
Going backstage to watch the preparation to launching the fireworks is strictly forbidden.
Yonshakudama can only be seen in Japan and only during the 9th & 10th September 片貝花火まつりFirework Festival in Katakai, a small area of Ojiya city in Niigata prefecture.
It is manufactured by Honda Masanori's company and the making process is top secret.