Coined by Marion Shoard (see Edgelands of Promise) and further popularised by Farley, P. and Symmons Roberts (See Edgelands Journeys Into Englands True Wilderness), the term can be confusing.
The term can refer to:
the indeterminate urban boundary between rural territories which can host infrastructure, golf courses, car parks and canals.
marginal areas outside of conventional urban circuits like derelict and brownfield sites.
non-places such as retail parks, service stations and transport infrastructure on the outskirts