Images from a New York Times article about Charles Victor Tucker III, aka Chongo, a transient mountain-climber, guru and author of "The Homeless Interpretation of Quantum Mechanics."
Industrial/warehouse yards could be classified as zones of extensive isolation + polydirectional alienation. Compared to a factory, car lot or farm they are less monitored at a lesser expense and the watchmen might allow unauthorized activities within the zone. Visibility, information and exchange moves in complex directions and circuits. The guards and transients are watching each other, and both engage intimately with the topography of the zone, but there is an explicit hierarchy configured around property, authority and legal legitimation.
A National Park may be a zone of intensive isolation + unidirectional alienation requiring much attention and expense to maintain itself. Directionality of visibility, information flow and exchange are ostensibly unidirectional - visitors are monitored by the park system and in the case of national parks, the federal government.