EUREKA, Mo. (KMOX) -  Six Flags St. Louis Thursday announced plans to add a new steel rollercoaster, Boomerang, to the park’s lineup starting in 2013.

Trains holding 28 passengers will be pulled up 125 feet backward to the top of the first lift hill and then released to shoot out through the 1,650 feet of track at up to 50 mph.

Riders will sail through a half loop, then into a right half corkscrew, a left half corkscrew, then another half loop.

The ride earns its name by sending riders back through all of those spirals, loops and twists again.

“Six Flags St. Louis has been Missouri’s coaster capital for many years,” said Dave Roemer, Six Flags St. Louis park president. “In 2013 Boomerang will not only strengthen that position and our thrilling coaster line-up, but give our guests more twists and turns to scream about.”

Park officials also announced Thursday that 2013 season passes are now on sale at the lowest prices of the year.

They provide unlimited visits for the remainder of the 2012 season, including Fright Fest, and all of the 2013 season.

Go to www.sixflags.com for more information.

Boomerang will be the park’s ninth coaster.