So there you have it. I count four invisible barrier corners, four outer barrier corners, and eight water corners. All of the corners appear to be in line with each other. My approximate guess for the size of the map, from outer corner to outer corner is 8 to 9Km.
General "thanks" to xbill (specifically for this trick discussion) and the HBO forum for info on the barrier shape.
Originally announced on the HBO Forum on May 3, 2002.
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