Harry Potter and the Half-Blood Prince - J. K. Rowling [207]
“Oho,” said Dumbledore happily, seconds later. His hand had closed in midair upon something Harry could not see. Dumbledore moved closer to the water; Harry watched nervously as the tips of Dumbledore’s buckled shoes found the utmost edge of the rock rim. Keeping his hand clenched in midair, Dumbledore raised his wand with the other and tapped his fist with the point.
Immediately a thick coppery green chain appeared out of thin air, extending from the depths of the water into Dumbledore’s clenched hand. Dumbledore tapped the chain, which began to slide through his fist like a snake, coiling itself on the ground with a clinking sound that echoed noisily off the rocky walls, pulling something from the depths of the black water. Harry gasped as the ghostly prow of a tiny boat broke the surface, glowing as green as the chain, and floated, with barely a ripple, toward the place on the bank where Harry and Dumbledore stood.
“How did you know that was there?” Harry asked in astonishment.
“Magic always leaves traces,” said Dumbledore, as the boat hit the bank with a gentle bump, “sometimes very distinctive traces. I taught Tom Riddle. I know his style.”
“Is … is this boat safe?”
“Oh yes, I think so. Voldemort needed to create a means to cross the lake without attracting the wrath of those creatures he had placed within it in case he ever wanted to visit or remove his Horcrux.”
“So the things in the water won’t do anything to us if we cross in Voldemort’s boat?”
“I think we must resign ourselves to the fact that they will, at some point, realize we are not Lord Voldemort. Thus far, however, we have done well. They have allowed us to raise the boat.”
“But why have they let us?” asked Harry, who could not shake off the vision of tentacles rising out of the dark water the moment they were out of sight of the bank.
“Voldemort would have been reasonably confident that none but a very great wizard would have been able to find the boat,” said Dumbledore. “I think he would have been prepared to risk what was, to his mind, the most unlikely possibility that somebody else would find it, knowing that he had set other obstacles ahead that only he would be able to penetrate. We shall see whether he is right.”
Harry looked down into the boat. It really was very small.
“It doesn’t look like it was built for two people. Will it hold both of us? Will we be too heavy together?”
Dumbledore chuckled.
“Voldemort will not have cared about the weight, but about the amount of magical power that crossed his lake. I rather think an enchantment will have been placed upon this boat so that only one wizard at a time will be able to sail in it.”
“But then — ?”
“I do not think you will count, Harry: You are underage and unqualified. Voldemort would never have expected a sixteen-year-old to reach this place: I think it unlikely that your powers will register compared to mine.”
These words did nothing to raise Harry’s morale; perhaps Dumbledore knew it, for he added, “Voldemort’s mistake, Harry, Voldemort’s mistake … Age is foolish and forgetful when it underestimates youth. … Now, you first this time, and be careful not to touch the water.”
Dumbledore stood aside and Harry climbed carefully into the boat. Dumbledore stepped in too, coiling the chain onto the floor. They were crammed in together; Harry could not comfortably sit, but crouched, his knees jutting over the edge of the boat, which began to move at once. There was no sound other than the silken rustle of the boat’s prow cleaving the water; it moved without their help, as though an invisible rope was pulling it onward toward the light in the center. Soon they could no longer see the walls of the cavern; they might have been at sea except that there were no waves.
Harry looked down and saw the reflected gold of his wandlight sparkling and glittering on the black water