 Thunder Run features a double out and back layout . It begins with a left turn out of the station . This leads to the 90 @-@ foot @-@ tall ( 27 m ) chain lift hill . Once at the top , riders go down a small dip and along a 180 degree turn to the left . The first drop of 74 feet ( 23 m ) leads into a near @-@ ground level 70 @-@ degree banked turn to the left . A series of small camelback hills are followed by a turnaround . The train proceeds back towards the station with another hill . This process repeats a second time leading back into the brake run and station . 
