 On March 14, 1998, the world's first Dive Coaster, "Oblivion", opened at Alton Towers.Though Oblivion is classified as a Dive Coaster, it does not have a true vertical drop as the drop angle is 87-degrees.Two years later, the second Dive Coaster built, Diving Machine G5, opened at Janfusun Fancyworld and also does not have a vertical drop.