Rising above Wisconsin Dells at Mt. Olympus Water & Theme Park 136 feet is the monster named “Hades”. This coaster exploded onto the scene in 2005 and quickly was ranked one of the top 10 wooden coasters in the world. It was also the first coaster built by The Gravity Group, the builders of the #1 wooden coaster “The Voyage” at Holiday World, and the first wooden coaster in China, “Fireball” at Happy Valley. Unlike most coasters that stay above the ground the whole time, Hades takes it to the next level. It features the longest underground tunnel in the world on any coaster, both wooden or steel. What you get is a coaster that is both fast, intense, and in the dark!