Figure 6: Resistivity survey conducted over a carefully selected area of one hectare. The results, which are influenced by hydrology rather than geology, show certain details with greater clarity than gradiometer survey.

Figure 7: A gradiometer survey of the same area highlights the effects of destruction by fire and also records the underlying geology.

Figure 8: A first experiment over the same area with electromagnetic conductivity hints at future potential.

Figure 9: A magnetic image, over 80 x 60m, showing parallel rows of rooms at right.

Urban Dynamics
Of particular interest is the recognition of two buildings that appear as though they might be megarons (Fig. 6). A megaron is a type of building characterised by a pitched roof, open porch and central hearth that has clear cultural connections with Phrygia. These two structures, both apparently laying outside any of the original urban blocks, are substantial buildings each measuring approximately 10 x 12m. The existence of these megarons may perhaps represent further evidence for increasing Anatolianisation of the city in the years leading up to its destruction around 547 BC.

A single 80 x 60m image (Fig. 9) of sub-surface remains in the central portion of the site may serve as an example of the results that can be replicated over the greater part of the very large surveyed area. A section of a street can be seen meandering along a contour at bottom left and a heavily burnt set of structures stand out to the left of centre. At centre right are two parallel rows of rectangular rooms, each some 6 x 4m, with a corridor between. The row on the left appears to be longer than that on the right. Such a large number of these cells, which were presumably for storage, are unusual within a single complex. Further to the left, in an otherwise empty rectangular space, is one of the more usual two-roomed buildings.

Magnetic survey in the central portion of the city has led to the identification of a large, open, public place. One possible function for this feature could well have been as a market place, for which no other good candidate has been recognised within the city walls. Several major streets run tangentially to this space at the north-east of the Büyük Göl, the largest of the artificial reservoirs within the city. This large level area, which must have been devoid of buildings for some special purpose, occupies a sheltered position in the central sector of the site. New imagery of the Büyük Göl itself, obtained in September when it was dry, revealed the presence of substantial stone walling within the artificial banks on all four sides.

Unlike the Sülüklü Göl (Leech Pond) on the high southern ridge, also fully surveyed when completely dry, the Büyük Göl does not seem to have an elaborate and carefully constructed stone lining. Although part of an overall, planned, scheme of urban water management, the various pools and reservoirs within the city evidently varied in status and had differing functions.