 After being sold as the prototype, this corkscrew originally operated at Knott's Berry Farm from 1975–89.Developed by Ron Toomer of Arrow Dynamics, a Utah-based design firm, the "Corkscrew" was the first modern steel inverting roller coaster open to the public, with identical models opening at three other parks days later.After the train is dispatched from the station, it enters a small dip and into a short U-turn followed by a 70-foot-tall (21 m) chain lift hill.