back of beyond

back of beyond
    n 1: a very remote and inaccessible place; "you'd have to go to
         the back of beyond to find one of those"
    

53 Moby Thesaurus words for "back of beyond":
      China, Darkest Africa, God knows where, Greenland, North Pole,
      Outer Mongolia, Pago Pago, Pillars of Hercules, Siberia,
      South Pole, Thule, Tierra del Fuego, Timbuktu, Ultima Thule, Yukon,
      antipodean, antipodes, back, back-country, backwood, backwoods,
      backwoodsy, frontier, godforsaken, godforsaken place, hinterland,
      hyperborean, inaccessible, jumping-off place, nowhere,
      out of reach, out-of-the-way, outback, outer space, outpost,
      outskirts, pole, sylvan, the Great Divide, the South Seas,
      the boondocks, the moon, the sticks, the tullies, unapproachable,
      ungetatable, untouchable, up-country, virgin, waste, wild,
      wilderness, woodland