Thunder Dolphin 3.43

is a steel roller coaster at the Tokyo Dome City Attractions amusement park, which is part of Tokyo Dome City in Tokyo, Japan. The ride was designed and constructed by Intamin. At tall, Thunder Dolphin is currently the 8th tallest continuous circuit roller coaster in the world, behind Kingda Ka, Top Thrill Dragster, Fury 325, Steel Dragon 2000, Millennium Force, Leviathan, and Intimidator 305. Following an incident in which a 25 cm long bolt fell from the ride while in motion on 5 December 2010, injuring a 9-year-old visitor, operation of the ride was suspended until 1 August 2013, when the ride reopened.Thunder Dolphin's long course passes through both a hole in the LaQua building, and through the Big-O, the world's first centerless Ferris wheel. The Thunder Dolphin has a maximum speed of.