He began walking once more through the forest, pointing out what were, clearly, the remains of a massive man-made landscape. There was not just one moat but three, arranged in concentric circles. There was a giant circular plaza where the vegetation had a different character from that of the rest of the forest, because it had once been swept clean. And there had been a sprawling neighborhood of dwellings, as evidenced by even denser black soil, which had been enriched by decomposed garbage and human waste.
