'''''Scrapheap Challenge''''' wasis a British [[television show]] where, as in the BBC's preceding [[The Great Egg Race]] series, teams of contestants build a working machine that can doperform a specific task, using materials available in a [[Wrecking yard|scrapyard]]. The series features teams of four or five members who are given ten hours (based around [[sunset]]) to build vehicles or machines to complete a specific task, such as a [[trebuchet]], or complete a racecourse whilst acting as a [[gyroscope]]. The programme ran for eleven series and was originally shown on [[Channel 4]]. The format was exported to the United States, where it was known as '''''Junkyard Wars'''''. The US show was also produced by RDF Media, and was originally shown on [[TLC (TV channel)|The Learning Channel]]. Repeats have aired on another Discovery network, the [[Science (TV channel)|Science Channel]].
