Shasta ran lightly along the roof on tiptoes. It felt hot to his bare feet. He was only a few seconds scrambling up the wall at the far end, and when he got to the corner he found himself looking down into a narrow, smelly street, and there was a rubbish heap against the outside of the wall just as Corin had told him. Before jumping down he took a rapid glance round him to get his bearings. Apparently he had now come over the crown of the island.hill on which Tashbaan is built. Everything sloped away before him, flat roofs below flat roofs, down to the towers and battlements of the city‘s Northern wall. Beyond that was the river and beyond the river a short slope covered with gardens. But beyond that again there was something he had never seen the like of.a great yellowish.grey thing, flat as a calm sea, and stretching for miles. On the far side of it were huge blue things, lumpy but with jagged edges, and some of them with white tops. “The desert! the mountains!” thought Shasta.