・In Yamada Village lies Danjiku-sama (literally, “giant reeds”), which marks the site of the martyrdom of a Hidden Christian family. There are several Danjiku-ko (followers’ associations) in the Hikusa and Yamada areas.
・January 16 is thought to be the anniversary of the death of Danjiku-sama, and a memorial service is held on that day as a traditional event by Underground Christians in the Hikusa area. Many people working in the fishing industry also attend the event to pray for a good catch.
・One of the “Oratio” (prayer) songs sung at Underground Christian events in Yamada Village was the “song of Danjiku-sama.”
・This is a valuable location where events relating to Underground Christians can be seen in the open air.