Imagine standing by a quiet riverbank in rural Japan, the air heavy with the scent of summer grass. The last traces of daylight have slipped away, and for a moment, darkness surrounds you. Then—like magic—tiny green lights begin to flicker in the air. One, two, dozens... dancing in silence.

There are places in the world that don’t just show you nature—they tell you stories. And then there’s Lake Mashū, a mystical caldera lake nestled in the mountains of Hokkaido, Japan. Known for its mirror-like waters and often shrouded in fog, Mashū is mysterious on any given day. But once a year, it unveils something truly otherworldly: the Dragon Eye.