After breakfast, the day started with a walk up to the shrine of Kitawakamiya Shinto, then further up into the mountains. Because of the region we are in it tends to cool off a lot at night, and the mornings tend to be very misty with low clouds descending into the mountain range - which make for very scenic views (and also made me think of the Japanese landscape paintings we saw at the Nezu Museum back in Tokyo).
Upon descending the mountain we visited the Takumikan Craft Museum where a master carpenter who is associated with the museum showed us show samples of the joinery and kumiki techniques used. The joinery of much of this is so elaborate and without nails so the samples are set up on a table to be solved. The museum also houses many historic tools.
After lunch we visited local lumber mill. When we arrived they were debarking a 150 year ol walnut tree. The yard is full of lumber that they dry over the course of a year to reduce the moisture content naturally. A large amount of the lumber is actually imported these days despite being in the very area of the forestry region and a large amount of Japanese Cedars that are long since fully grown. That will become a topic of a furniture company we visit the next day.
Afterwards we visited a house being constructed by a master carpenter. It was somewhat of a connected duplex for both his parents (the father who is also a master carpenter, but retired) and his own family. The house has been in construction for 2 years now and is entirely solid wood. Unfortunately I have no photos - my camera had died during the lumber mill. There was no plywood to be found in the house. Even the structure of a bathroom vanity was 2" which solid wood. Walls were custom made 3/4" solid tongue and groove wood boards, and the roof beams are from entire trees and interlock without nails or glue. We were told we would visit the house again near the end of trip when the house is complete (they are just in final finishes) so I can hopefully grab photos later.