Grand Canyon Nat. Park: Masonry Repairs 0164
May 18, 2012. Sawing stone slab to fit the dimensions of the wall during Duck on the Rock Viewpoint boundary wall repair work - summer 2012. Approximately 1,000 square feet of boundary wall is being repaired. The viewpoint is closed during the repair work. Project should be completed by the end of July 2012. NPS Photo by Kristen M. Caldon.