Hampstead Heath a large, ancient London park, covering , has numerous footpaths, and feels a million miles away - despite being approximately four miles (7 km) -from the City. North from Hampstead Heath the Dollis Valley Greenwalk (or Green Walk) is a link between the Heath and the Moat Mount Nature Reserve in Mill Hill in the London Borough of Barnet, connecting various green spaces along the way. This long route acts as a link between the Capital Ring, which runs just north of the Heath through Highgate, and the London Loop.