This article comprises descriptive and explanatory notes on a number of plans made during a plane-table survey carried out by the authors in the Van region in the summer of 1957. In addition to the plans and photographs, there are two details, one being an elevation. The form of publication is partly determined by the appearance of sketch-plans of most of these Urartian fortresses in a preliminary article. Apart from correction of certain errors in that article, the general information given therein will not be repeated. For the position of the various fortresses reference should be made to the map published in that preliminary report. To the sites marked thereon should be added two more, Aznavur and Kancıklı, both near Patnos, on the road north-west from Erciş. to Karaköse and thus some way north of Lake Van. Both are of major importance: Aznavur lies one mile north-west of Patnos and Kancıklı some nine miles south-east.
