Japan Has Long Slides?

I did not know about the mountain slides in Japan until I saw this video. Looking into the topic more I found that their are several of them in Japan. The one in the video below is said to be the longest. It’s kinda built more like a shipping roller belt than a slide, and it’s structure contains a lot of wood and is built into the mountain. I think these slides would be fun to visit if your in the region, though the slides are not exactly thrilling. Would You visit these mountain slides on your vacation?