I decided to redo a poorly built waterfall after getting an idea from one at a garden center. Sooooo, upon seeing the price of rocks, I called my brother who farms peppers. He cleared some acreage years ago to farm and I knew he piled up the rocks that were on the property. We went to look and had to laugh cause there were ACRES of rocks, all sizes,shapes,types just sitting there for the picking!! We heave hoed 6 or 8 that looked like they would fit the bill and the waterfall looks fantastic!!! So glad I remembered, cause it would have cost HUNDREDS to get the rocks if we had to pay!!!