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The Burghley Digital Map
Customs ports are indicated in red, with their members in green; orange indicates 'creeks' without permanent customs supervision, and blue indicates landing places unrecognised in the initial customs survey.
Black-yellow dashed outlines indicate landing places reported to be in decay; those whose continuation is considered non-essential for customs revenue are black-crossed.
Hypothetical road network under development: a 3D implementation can be found at http://map.docuracy.co.uk/.