Nemesis Inferno is a steel inverted roller coaster at the Thorpe Park theme park in Surrey, England, UK. Its layout was conceived and designed by John Wardley and then built by Bolliger & Mabillard with Werner Stengel providing the layout calculations, the same Swiss firm that built the related Nemesis inverted roller coaster at Alton Towers. As a result, Nemesis and Nemesis Inferno are often compared.
The 750m Nemesis Inferno is themed around an erupting tropical volcano. The ride stands 29m tall, features a top speed of 80km/h, and four inversions.