Thirteen is a roller coaster in Dark Forest at Alton Towers. While it's not the best, it is also recommended. The minimum height to ride is 35 inches.
Thirteen is the worlds first rollercoaster which features a vertical drop of the track. The theme is based on the discovery of an unearthed ancient burial site in an area of unexplored woodland known as the Dark Forest.
The ride features an outdoor track section and a reverse dark Section as well as the main drop element which occurs inside the station building.
This is a great family ride, well themed and a brilliant experienc.