Corkscrew is the name of a roller coaster at Valleyfair in Shakopee, Minnesota featuring one vertical loop and two corkscrews. Built in 1980, Corkscrew was planned to reflect the design of its sister roller coaster Corkscrew at Cedar Point. It is notably one of the first roller coasters to feature a double corkscrew, as well as a vertical loop. The main differences that the Valleyfair model has is the addition of a finale helix and the omission of the camelback before the loop.