Ancient Puebloans were master masons and used every bit of cliff to use. June 23, 2012 by Matt ThomasAncient Puebloans were master masons and used every bit of cliff to use. Hovenweep National Monument About Matt Thomas Matt is an avid writer and explorer, who loves to showcase his home state of Colorado. His favorite place to be is right here in the Centennial State. Previous Post:Ancient Puebloans were master masons and used every bit of cliff to use.