at . World's longest roller coaster since August 2000. Incident On August 23, 2003, a sheared axle caused one of the trains to lose a wheel. A passenger suffered a serious back injury and a 28-year-old man swimming in the water park pool was injured when he was hit in the hip with the wheel. The ride was closed for over three years and reopened on September 3, 2006. Awards References Roller coasters introduced in 2000 Roller coasters in Japan