These are eight springs formed by filtrated water through lava underground for about 20 years, and each of the eight ponds was once a pilgrimage destination of Fujisan worship in association with one of the Eight Dragon Kings. People making worship-ascents of Fujisan used the water of these ponds to wash away impurities.
These eight small ponds are home to one of the hundred famous freshwaters of Japan and the site is very popular with photographers. The four seasons, especially the snowscape in winter or the fall colors, make a fantastic picture when reflected in the clear water.