Zierer is the company that has built the "Knightmare" at which Lancashire theme park?
Camelot Theme Park Camelot Theme Park is an abandoned resort and theme park located in the English county of Lancashire. The park's theme was the well known legend of Camelot, and the park decor incorporated pseudo medieval elements. It was located on a 140 acre site near the village of Charnock Richard, 3 mi west of Chorley.
Thirteen (roller coaster) Thirteen (officially stylised as TH13TEEN) is a steel roller coaster at Alton Towers in England. The ride was constructed by Intamin and opened on 20 March 2010. It is the world's first vertical freefall drop roller coaster, on which the track and train freefall approximately five metres in darkness. The ride replaced and is built on the former site of the Corkscrew, which resided at Alton Towers for 28 years between 1980 and 2008.