An opening day attraction at Six Flags Over Mid America (Now Six Flags St Louis) was Injun Joe's Cave which told the story of Tom Sawyer and Becky Thatcher as they escaped from Injun Joe after his murdering of Dr. Robinson. They attraction was open until 1978 when it was replaced with "The Time Tunnel". To this day, the building that housed this former attraction is home to "Justice League Battle for Metropolis.