We really didn't realize that the National Park had two distinct portions..... this part is close to the Desert Museum so the scenery is quite similar. But, as with most National Parks, there was a visitor center and a guided walk to see the ancient petroglyphs.... This side of the park has a gravel road loop that is quite easy to drive.... from it there are pull offs that lead to trail heads for trails of various lengths. We were able to find parking at each pull off since we were there in March.... not sure if that would be true during other times of the year.