Feeling along the bar and the wall behind it, he discovered a vertical crack.
“A folding door,” he thought. “Now to lift the bar and see if we can open the door and find out where it leads to.”
The bar was thick and heavy, and so well settled down into its sockets that it had evidently not been used for some time. Martin’s efforts to lift it at first had no success, but after much pulling and pushing it shifted upward suddenly with a loud squeaking noise.
The boys held their breath, wondering whether the sound had been heard in the room above. But the slow creaking still went on, and Martin ventured to raise the bar from its place and lay it gently on the floor.
There was an iron ring in one of the panels of the double door. Inserting his finger in this Martin pulled, and the panel, sticking at first, presently came inward with a squeak; clearly its hinges needed oiling. Inch by inch he drew it towards him. A strong breeze blew into the room, carrying with it a salt tang. The clear sky eastward was studded with stars, which kindled reflections in the river. Nearer at hand a reddish glow suffused the sky.
While they were gazing out there was a creak above them, much louder than they had heard before, and a large object dangling at the end of a rope passed slowly downward within a yard of their faces. It was plain that goods were being let down from the store-room above with some care to avoid noise, for there was no shouting, no giving and receiving directions, no cries of “Are you ready?” “Lower away!” such as were usual in operations of the kind.
Holding on by the door, Martin bent down and peered over the edge, careful to keep out of sight. The package that had been lowered rested on a sort of quay between the wall of the warehouse and the shored-up bank of the river. A man was disengaging it from the rope. When it was free he shook the rope as a signal that it might be drawn up, then hoisted the package on to a truck and wheeled it along the quay until he came to a short jetty. There he halted and lowered it over the side; evidently a boat was moored below. Apparently the tide was too low to allow of the boat’s drawing in nearer to the bank.
Meanwhile a second load came slowly down over the pulley, and reached the ground with a slight jolt. The man had not yet returned from the jetty with the truck. Martin wondered whether it would be possible to slide down the rope without attracting attention. The stars gave very little light, and the glow from the Fire was intercepted by the angle of the warehouse. The distance from the door to the ground was less than twenty feet.
Leaning out he cautiously tried the rope. It gave under a slight pull, showing that the man above was no longer holding it firmly. But he must have noticed the movement, for Martin heard a hoarse voice whisper, “Don’t pull the rope through the block, you fool!”
He shrank back into the room.