[HD] "Drop Out is a thrilling, seven-story drop/slide, and is one of the tallest vertical drops in the country. It hurls riders down in just four seconds, at speeds reaching nearly 40 miles an hour." - Raging Waters website
But of course, the tallest free fall slide is Summit Plummet at Disney's Blizzard Beach. "Summit Plummet is one of the highest and fastest water slides on Earth. Barely behind "Insano" in Beach Park in Brazil which,when opened in 1989, was credited by Guinness World Records as the tallest and fastest water slide on Earth" - Wikipedia