Suikinkutsu
Excess water from a water basin, chozubachi, drops into a hidden cavity underground. The encounter with the water surface creates a sound which resonates and brings a musical tone. Suikinkutsu is a centuries old tradition in Japan and it can be found in several zen gardens, this video clip is from Enkō-ji in Kyoto.
For a collection of suikinkutsu, visit: https://vimeo.com/album/5683754
