As part of the Tokyo Hotaru Festival, the Sumida River was lit up in homage to the Fireflies that used to Inhabit the area.

Imagine a glowing river lit up with the natural illumination of fireflies. The small insects flitting across the water reflecting upon it like a naturally created light show. This past weekend the Sumida River that runs through Tokyo, Japan was lit up by 100,000 LED lights for the Tokyo Hotaru Festival to commemorate the now scarce insects that used to bring the river to life. The balls of light which have been dubbed “Prayer Stars”.  were provided by Panasonic. They are 100% solar powered and were designed to activate when they come in contact with the water.

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