This photo has a really interesting pattern. The sand dunes almost look like a farmer's field after plowing it with a tracker or horses. Adams took it from the right vantage point such that the foreground of the photo starts with one end of the sand dunes, the pathways for people. The other end is shrouded in shadows; Whether due to clouds, or by using filters, the overall effect is one of the unknown, a path disappearing off into the distance.