Figure no. 6
1 Rural areas and parks in developed countries typically within in a few days from a road head and within range of rescue services human habitation may be land tenure or economic factors but not by terrain or climate.
2 Inhabited areas in developing nations with purchasable aces to local transport shelter and food supplies.
3 Sparsely inhabited areas with no regular mechanized aces or local transport no communications infrastructure and traditional subsistence lifestyles only.
4 Areas that are uninhabited because of extreme environments poles some deserts highest mountain peaks.