There's also The Great wall of Gorgan: http://www.atlasobscura.com/articles/irans-great-wall-is-now-buried-and-forgotten http://www.atlasobscura.com/articles/ir

There's also The Great wall of Gorgan: http://www.atlasobscura.com/articles/irans-great-wall-is-now-buried-and-forgotten http://www.atlasobscura.com/articles/irans-great-wall-is-now... > It was so well-known that it allegedly factored into the plans of military legends such as Genghis Khan. Today, however, it’s been almost entirely forgotten—many locals living within a few miles of it don’t even know of its existence.