“Comparatively easy! I don’t agree with you,” cried Ganimard, who had unfolded the document. “The number 44 and a triangle with a dot in it: that doesn’t tell us much!” “Yes, yes, it does! Look at the door. You see it’s strengthened, at each corner, with a triangular slab of iron; and the slabs are fixed with big nails. Take the left-hand bottom slab and work the nail in the corner: I’ll lay ten to one we’ve hit the mark.” “You’ve lost your bet,” said Ganimard, after trying. “Then the figure 44 must mean—” In a low voice, reflecting as he spoke, Beautrelet continued: “Let me see—Ganimard and I are both standing on the bottom step of the staircase—there are 45. Why 45, when the figure in the document is 44? A coincidence? No. In all this business, there is no such thing as a coincidence, at least not an involuntary one. Ganimard, be so good as to move one step higher up. That’s it, don’t leave this forty-fourth step. And now I will work the iron nail. And the trick’s done, or I’ll eat my boots!” The heavy door turned on its hinges. A fairly spacious cavern appeared before their eyes. “We must be exactly under Fort Fréfossé,” said Beautrelet. “We have passed through the different earthy layers by now. There will be no more brick. We are in the heart of the solid limestone.” The room was dimly lit by a shaft of daylight that came from the other end. Going up to it, they saw that it was a fissure in the cliff, contrived in a projecting wall and forming a sort of observatory. In front of them, at a distance of fifty yards, the impressive mass of the Needle loomed from the waves. On the right, quite close, was the arched buttress of the Porte d’Aval and, on the left, very far away, closing the graceful curve of a large inlet, another rocky gateway, more imposing still, was cut out of the cliff; the Manneporte,[10] which was so wide and tall that a three-master could have passed through it with all sail set. Behind and everywhere, the sea. [10] _Magna porta_. “I don’t see our little fleet,” said Beautrelet. “I know,” said Ganimard. “The Porte d’Aval hides the whole of the coast of Étretat and Yport. But look, over there, in the offing, that black line, level with the water—” “Well?” “That’s our fleet of war, Torpedo-boat No. 25. With her there, Lupin is welcome to break loose—if he wants to study the landscape at the bottom of the sea.” A baluster marked the entrance to the staircase, near the fissure. They started on their way down. From time to time, a little window pierced the wall of the cliff; and, each time, they caught sight of the Needle, whose mass seemed to them to grow more and more colossal. A little before reaching high-water level, the windows ceased and all was dark. Isidore counted the steps aloud. At the three hundred and fifty-eight, they emerged into a wider passage, which was barred by another iron door strengthened with slabs and nails.