Trial trenching at Bridge Farm, Earith, Cambridgeshire (centred on TL 3983 7650) was undertaken by a team from the Cambridge Archaeological Unit (CAU) in August 2005. The work was carried out on behalf of the landowner, Mr Latta, in advance of the planned construction of an agricultural reservoir. The project involved trial trenching over an area of 17.5 hectares. One undated pit (possibly Early Bronze Age) and three undated ‘ditches’ with associated banks (possibly Bronze Age) were found. In addition, important light was shed on the character of the palaeoenvironment in the area. `