Shivering Timbers is a wooden roller coaster at Michigan's Adventure in Muskegon County, Michigan. It was developed and built by Custom Coasters International. Opened in May 1998, Shivering Timbers debuted for the park's 30th year in operation and was a success. Construction for the ride began in 1997. The trains were made by Philadelphia Toboggan Coasters. The ride's out and back layout is 5383 feet long, making it the 6th longest wooden roller coaster in the world.