The wall, complete with battlements, watchtowers and beacons, wound its way through uninhabited highlands like a ribbon that had been whisked away on the wind, had snagged on peaks and ridges and dropped down over rugged mountain ranges into deserted valleys from which it once more climbed up just as steeply, changing course along a ridge before once more swinging back after an umpteenth bend onto the ideal line imagined by long-forgotten architects and generals. And here, Ransmayr meets an old man trying to record the call of every songbird found along the wall, the territorial singing of those for whom the wall was no barrier at all. Imagine, says the old man, all the recordings played togethera great wall of birdsong. It might make an intruder run away in fright, or it might enchant him so that he forgot his hatred or his desire to fight, rendered powerless to do anything but listen in rapture.