During the nineteenth century, the Rock Triangle in Bury had been a thriving industrial area with numerous textile mills, engineering works and iron foundaries, small workshops, and rows of terraced housing. These buildings had all been demolished by the end of the twentieth century, but their buried remains were excavated by Oxford Archaeology North in 2006-7, in advance of the Rock Retail and Leisure development, built between 2008 and 2010. This booklet charts the history of Bury and The Rock Triangle, and summarises the recent archaeological excavations, which have provided a record of part of Bury's important and varie industrial past.