ocr: abandoned, and an artificial fill of earth and gravel was banked up against their ruins. This fill formed a terrace at least 15 meters wide along the side of the central wadi that must have been supported by a massive retaining wall, although no trace of this has been found. The importance of the terrace is that it provides evidence ofa deliberate program of town planning, necessitating I a greater expanse of level ground in the center oft the site than was naturally available, and iti implies the birth ofc a sense of civic pride among the inhabitants of Petra. The dating ofthis development to ...
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