Walt Whitman - The Parks lyrics

In the midst of all here, lie such beautiful contrasts as the sunken basins of the North, Middle, and South Parks, (the latter I am now on one side of, and overlooking,) each the size of a large, level, almost quandrangular, gra**y, western county, wall'd in by walls of hills, and each park the source of a river. The ones I specify are the largest in Colorado, but the whole of that State, and of Wyoming, Utah, Nevada and western California, through their sierras and ravines, are copiously mark'd by similar spreads and openings, many of the small ones of paradisiac loveliness and perfection, with their offsets of mountains, streams, atmosphere and hues beyond compare.