@DayTripper_Mk2 So many thanks. That's quite exciting. Wasn't able to put any of the search terms. Appreciate the time you took looking, know what some of these warren holes can be like.
The location will set up my next trip to Japan that i've been planning / cancelling since my last trip to some of the northern parts in early 2019. Looks like it will be Feb 2023 now.
If interested, did a little blog of my trip