PERU
'(<a href="http://www.j-archive.com/media/2008-05-15_DJ_15.jpg" target="_blank">Alex reports from Machu Picchu.</a>) In order to deal with the problems of erosion & farming on steep hillsides, the Incas came up with <a href="http://www.j-archive.com/media/2008-05-15_DJ_15a.jpg" target="_blank">this</a> brilliant solution--& they used it a lot'
terraces