Biwa Fall near Oboke Canyon, Tokushima prefecture (Shikoku island)
Named after a legend that Heike fugitives played the biwa, an old mandarin-shaped guitar from China, to comfort each other in front of the fall. There are many sayings about loser refugees of Heike clan in Shikoku, which founds none in Kyoto, the then capital city in Heian period.
Biwa (Chinese lute) https://en.m.wikipedia.org/wiki/Pipa I have seen it only at Nara National Museum’s Annual Shoso-in Treasure Repository Exhibition. I sometimes find them in old tales but I wonder there still exists any player.
The Tale of the Heike https://en.m.wikipedia.org/wiki/The_Tale_of_the_Heike There were monk bards for telling/singing the story as playing the biwa in old time. All Japanese are forced to memorize the head part in classical literature class at high school.
Oboke Canyon, Tokushima prefecture (Shikoku island). It is right on Japan Median Tectonic Line (an active fault), which crosses from Kyushu to Kanto area through Shikoku.