Photographs of another massive urban park that is under stress

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London's Hampstead Heath is a much-beloved park in the north of the city. It was once part of the countryside surrounding London and it is now 790 acres of green deep within the urban landscape.

There are ancient trees, tall grasses, ponds and woods dense enough to get lost in--almost. But there are also thousands of people who use it weekly. It feels wild in parts, but it isn't.

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