'Yon shaku dama (Multi-break Shell) - 四尺ダマ. Launched once a year during the Katakai-Matsuri (festival) in Niigata each September.' ~€1,330. ~800m diameter burst.

https://youtu.be/Txq3NM35_C4
https://youtu.be/tqDoZEubSf4 Yonshakudama, a 420kg fireworks shell with a diameter of 1.2m #fireworks https://i.imgur.com/MDDclHQ.gifv