The komuso priests created a core repertoire of songs that they call the honkyoku (source songs). When a student masters all of these songs, he/she can begin the journey to enlightenment by way of the shakuhachi. One of these 36 honkyoku is called taki ochi no kyoku (falling water song), and was apparently inspired by and composed at Asahi Falls in Izu City. Long ago, a temple of the Komuso sect was located near the falls, and the song’s composer must have practiced there for a time.
In addition to its connection to shakuhachi lore, Asahi Falls is a unique geological feature of Izu due to the tiered shape of the falls. Because of its connection to culture, history, and the unique geological character of Izu, I highly recommend a visit to Asahi Falls.