Tsugaru mountain Pass is located on the Shirakami Line which is hardly paved.
There is a parking lot and toilet in the pass, you can get a nice view of Shirakami mountain range from the parking.
There is also a giant beech tree called Mother Tree which is said to be about 400 years old in the pass.
It takes several minutes by walking to the tree from parking.
Please note that reception of moblie phone is poor on Shirakami line.
It takes about 80 minutes by car to the pass from Hirosaki city.
Bus runs a few times a day from Hirosaki station to the pass.
Shirakami-Sanchi Visitor center official website
Day tour to visit here