Maru-ike-sama , a spring-fed pond with high transparency in Yamagata , JAPAN

Maruike-sama is a mystical pond located in Yuza Town, Akumi District, Yamagata Prefecture, where the underflow water of Mount Chokai wells up.

The pond is surrounded by primeval forest; on sunny days, sunlight streams into the clear water, creating a breathtaking scene where the pond glows with an emerald-green radiance.