So, where did the Incas get all the stones from which to build Machu Picchu? If this question bothered you, you get to answer it soon after you descend toward the ruins or come up the stairway of the fountains. This is the quarry that produced much of the granite used in the construction. The Incas used hammerstones, bronze and iron tools to create those perfectly fitting rocks. They were obviously excellent stoneworkers.