The beautiful curve of the waterfall is said to be the symbol of females beauty. So the waterfall is called "Me-daki" that means female waterfall in Japanese.
The actual name of the waterfall is "Hagoromo no taki" that means the waterfall like a celestial robe of feathers for angels. The special clear water nurtures a variety of creatures on the lower side of the stream.
It's so cold that you can cool down your body even in hot summer but please set the limit of time that you soak parts of your body. It may take the sensitivity of your skin.