Clustered mostly in the sparsely populated mountain ranges and deserts of the West(with a few patches further east) are the last remaining vestiges of wilderness in the continental USA, usually land that historically was seen as inhospitable to development or protected by law............Examples include the bayous of southern Louisiana, the north of Minnesota, and the Adirondacks of New York........There are currently just 750 such areas in the National Wilderness Preservation System comprising over 109 million acres -- roughly 5% of the United States by area.... ............ "Man has too long forgotten that the earth was given to him for usufruct alone, not for consumption, still less for profligate waste"............"Nature has provided against the absolute destruction of any of her elementary matter".............." But she has left it within the power of man irreparably to derange the combinations of inorganic matter and of organic life".............."We have now felled forest enough everywhere, in many districts far too much"........ "Let us restore this one element of material life to its normal proportions, and devise means for maintaining the permanence of its relations to the fields, the meadows and the pastures, to the rain and the dews of heaven, to the springs and rivulets with which it waters down the earth". ---- -George Perkins Marsh, Man and Nature

link to article----America the wild: Where to find untouched wilderness 

where there are no lights on at night, best places still left for wildlife