The good Doctor chuckles. "A lifetime spent in study of Old Narnia did then bear fruit," he agrees, modestly.

"But we weren't certain where the help would arrive, if it would come directly to us on the battlefield or somewhere else. I surmised that if it were the High King and his consorts, they might appear where they'd been lost – in Lantern Waste – or where they'd lived – here, in the castle of Cair Paravel. So his Majesty dispatched Pattertwig the Squirrel to Lantern Waste and the Dwarf Trumpkin to what was left of the castle, and determined to blow the horn at dawn the next morning."