This toll road leads to the eighth station of Mt.Iwaki (Alt. 1,200 m).
You can see views of the Japan Sea and the coast, many mountains of Shirakami-Sanchi at eighth station.
You can also go up to the ninth station by the lift, it takes 1 hour to the summit of Mt.Iwaki (Alt.1,625 m) by hiking from there.
There is a lot of alpine plants on the way to the summit, especially Michinoku Kozakura, a specific plant of the mountain, is worth seeing.
Best season for seeing alpine plants is from mid May to July.
Iwaki skyline official website (Japanese site only)
Day tour to visit here
Iwaki-san sightseeing Half-day tour