KANSAS CITY, Kan. (AP) — The opening of the world’s tallest slide at a Kansas City, Kansas, water park has been delayed about two weeks to allow for more testing.

The Verruckt initially was scheduled to start operating May 23 when the rest of the Schlitterbahn attractions open, but that’s been pushed back to June 5.

The Kansas City Star reports the Verruckt, which means “insane,” was certified in April by Guinness World Records as the world’s tallest. The slide is 168 feet 7 inches tall and sends riders on four-person rafts plummeting at 60 to 70 mph.

Park owners say they hope the ride will become a destination attraction.