・In the Edo Period, many Christians in the Sotome area continued to secretly maintain their faith, despite the harsh crackdown under the ban on Christianity.
・Japanese Father Thomas Jihei (also known as “Kintsuba Jihei”) went to Manila to escape persecution under the anti-Christian edicts, but later returned to Japan secretly. It is said that in 1637, he was caught and martyred for his faith in Nagasaki.
・It is said that Father Thomas Jihei used this rock cave as a hideout.