The third in the thrilling Tunnels series. As he plummets down a subterranean void, it looks like the end for fourteen-year-old Will Burrows. But it's just the beginning of a terrifying new adventure in which he must face giant carnivorous spiders and the deadly Brights. And, much worse, twin Styx girls with a score to settle. After DEEPER, can the TUNNELS adventure be any more dangerous? And where will it end? Will Burrows and his gang are far from finished as they free-fall down a subterranean pore. As they experience reduced gravity, the dark mysteries of the deep unfold and they discover a strange fungal shelf, which not only reveals artifacts from ancient civilisations, but clues to a lost land at the end of the Earth.