Great place to go snowboarding in the san-in area.
Last 2 years I went to Kokusai, wich is much bigger and a lot more crowded. After going to Okudaizen I found my new favorite place in Japan. They have several jumps, and rails, and the walls are perfect for tricks all the way down. 1 run looks like a huge half pipe. This is not a good place for skiing, only snowboarding. 85% snowboarders. Leading into the jumps you have to build a lot of speed because there is a long mellow stretch before the jumps that slows you down.
Other than that we had a blast and will definately be going back soon.