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 (around 1 km long) 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 at the site, which is located 800m (0.5 miles) east of Fengate, in 1982. Some areas have been reconstructed, including a typical Iron Age roundhouse dwelling.