Double Loop was an Arrow Dynamics custom looping coaster that operated at Six Flags Worlds of Adventure in Aurora Ohio. The coaster operated from 1977 to 2007, when the park closed entirely. Though it was relatively short, it was the first coaster to feature back-to-back vertical loops. Funtime Incorporated, the owners of Six Flags Worlds of Adventure, known as Geauga Lake at the time, partnered with Arrow Dynamics to build an industry first. Double Loop opened in 1977 with the first back-to-bac

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