The walls which are lightly shaded in the accompanying plans are much inferior in construction to the more darkly shaded walls, for while the latter are built in most regular courses, and the stones are most carefully packed in the whole thickness of the walls, the former, though sometimes having the exterior courses laid with some regularity, are most carelessly built in their interior, and the stones seem to have been laid in anyhow, and consequently there is a great difference in the durability of these walls; and while it would almost be possible to drive a cart along the top of the better-built part of the outer wall, one can only creep along the top of the worse-built portion while risking a fall. Besides, the better-built and the worse-built portions of the outer wall do not unite near the great doorway, and the foundation of the well-built walls turns outward, as is shown in the plan. The worse-built walls of all the temples do not show any of the peculiarities of design so characteristic of the better walls, except in two instances, where they seem to be rough reconstructions of older walls. We may, therefore, assume that these poorer walls are not of the original period, and that they were built by a people who either did not practise solar worship or who did not do so under the original forms. We will, therefore, disregard the poor walls in studying the plans of the temples. It is much to be regretted that we could recover no plan of the western side of the original outer wall, as it might have made clear to us the meaning of many of the features of the eastern wall.