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This huge area of meadow and scrub land is a rural escape in the city. Boarded by the Grand Union Canal, which winds through the edge of the greenery, the space is an important wildlife habitat with plenty of birdlife and butterflies. Since 2002, local volunteers have been working to create and maintain a new community woodland in the fields. Over 20,000 trees have been planted bringing new birds and insects to the area, which was once a landfill site. Plus, you can also explore Marnham Fields’ own version of Stonehenge.