A very attractive, finely engraved and historically interesting 17th century map of Fens which was published by Joan Blaeu for his Atlas Maior (Amsterdam: 1664) and has the expected centre crease. The map is probably based on a now lost manuscript map by William Hayward and shows the Fens before they were drained by Cornelius Vermuyden in the 1650s. The map is orientated so North is pointing to the right. There is one very small hole, as seen. The map is mounted, framed and glazed. measures 56 x 44 cm approximately. 75 x 65cm framed.