 It was renamed Thunderhawk in 2004 when Cedar Fair took ownership of the park.Following Geauga Lake's closure in 2007, Thunderhawk was dismantled and moved to Michigan's Adventure in time for the 2008 season, where it became the first inverted roller coaster in Michigan.Thunderhawk opened in 1998 at Geauga Lake amusement park under the name "Serial Thriller".