Must Farm is a Bronze Age archaeological site consisting of five houses raised on stilts above a river built around 950 BC in Cambridgeshire, England. The settlement is exceptionally well preserved because of its sudden destruction by catastrophic fire and subsequent collapse onto oxygen-depleted river silts.
The site is on the bed of a now-defunct river in Flag Fen basin, around 2 kilometres (1.2 mi) south of Flag Fen itself.
Bronze Age Britain is an era of British history that spanned from c. 2500–2000 BC until c. 800 BC. Lasting for approximately 1,700 years, it was preceded by the era of Neolithic Britain and was in turn followed by the period of Iron Age Britain. Being categorised as the Bronze Age, it was marked by the use of copper and then bronze by the prehistoric Britons, who used such metals to fashion tools. Great Britain in the Bronze Age also saw the widespread adoption of agriculture.
During the British Bronze Age, large megalithic monuments similar to those from the Late Neolithic continued to be constructed or modified, including such sites as Avebury, Stonehenge, Silbury Hill and Must Farm. That has been described as a time "when elaborate ceremonial practices emerged among some communities of subsistence agriculturalists of western Europe".