Air (abbreviation of Aerial Inversion Ride; originally stylised as air) is a steel flying roller coaster located in the Forbidden Valley area of Alton Towers in Staffordshire, England. It was the first flying rollercoaster manufactured by Bolliger & Mabillard, and as a result labeled as the first successful flying rollercoaster. Guests ride in a prone position and experience the feeling of flight by "flying" close to the ground, under footpaths, and narrowly past trees and rocks. The 840-metre-long (2,760 ft) ride reaches a top speed of 75 kilometres per hour (47 mph).