Flag Fen, east of Peterborough, England, is a Bronze Age site developed about 3500 years ago, comprising over 60,000 timbers, arranged in five very long rows, creating a wooden causeway across the wet fenland. Part way across the structure, a small island was formed. Items associated with it have led scholars to conclude the island was a site of religious ceremonies and significance. Archaeological work began in 1982 at the site, which is located 800 m (0.5 miles) east of Fengate. Flag Fen is now part of the Greater Fens Museum Partnership. A visitor centre has been constructed on site, and some areas have been reconstructed, including a typical Iron Age roundhouse dwelling.