Summer Nights is a sequence of nightscapes photographed along the eastern edge of the Rocky Mountains in Colorado. Robert Adams focuses on the continuing natural presence found in the beauty of trees, sky, and the shape of the land. The series proceeds outward from population centers (chiefly Denver) to the rural plains and mountains, linking what remains of nature in the cities to a larger natural context.

Adams observes, "What attracted me to the subjects at a new hour was the discovery then of a neglected peace."
This classic body of work, Summer Nights, Walking offers a reason to feel, once more, a regard for the quotidian American landscape that Adams reveals as still beautiful despite humanity's intrusion.