Are you planning a trip to Grand Canyon National Park this summer? To get the full experience, take a walk along the rim or hike into the canyon. Trails range from easy to strenuous, but all provide spectacular views. Just remember, every step down has to be repeated as a step up on the return trip. The bright line you see here shows the numerous switchbacks and change in elevation. Be sure to pack water, snacks and common sense. Photo by National Park Service.