Six Flags Great America in Gurnee is delaying the opening of the long-awaited Goliath roller coaster, billed as the fastest and steepest wooden coaster in the world.

In a statement issued this morning, a representative from Six Flags said the delay was due to “finishing touches taking longer than anticipated.” A representative could not immediately be reached for further comment.

Goliath was scheduled to open May 31 and promised to hurl riders down an 85-degree, 180-foot cliff before sending them into curves, two-upside twists and a zero-gravity stall, according to a Tribune report.

The coaster is set to be 165 feet tall and will plunge into a 15-foot deep tunnel for a record-setting 180-foot fall.

The ride marks the first new roller coaster at Six Flags since X Flight in 2012, part of a comeback of wooden roller coasters.