Dunham Park is part of the National Trust’s Dunham Massey Estate. It is a fenced and walled deer park with a resident population of fallow deer and has been largely wooded during it entire history. There are newly establish plantation areas in the east and a large number of veteran trees throughout the rest of the site.
This is what OpenStreetMap shows for Dunham Park and the rest of the estate including the house and the gardens which require a ticket or National Trust membership. However the Park itself is crossed by two public rights of way and is free to access.
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