But nothing happened. The corridor remained empty except for themselves. The walls loomed over them, the ceiling towered far above their heads. No one spoke; to do so would have felt like desecrating a tomb. Seventy meters from the entrance, the corridor separated into two paths, both leading downward. Without hesitation, Luuj chose the one on the left; since they had no exact idea of where they were going, one corridor was as good as another. They went downward, and the artificial source of light never wavered as they descended. If anything, it grew stronger. Ahead of them, the light became particularly intense. As they approached, the corridor opened into a large square chamber sixty meters on a side, with the ceiling still twenty meters high. Each wall was lined with rows of holes, ex

