'Where are you?' cried Will.
'Over here,' answered my brother; 'you can come along if you like. We think that there's a way of getting out by climbing up—we can see the trees on the back of the hill.'
This was a discovery indeed, and Will and I, as we made our way to where they sat, found the darkness decreasing at every step, and when we reached them, we could see about us quite plainly, for thin, dimmed shafts of sunlight penetrated the cavern from above by a narrow cleft, through which we could see not only the dark foliage of the trees, whose branches overhung the place, but a strip of blue sky.
'Listen!' said Will.
Somewhere near a 'butcher' bird was calling to its mate, who quickly answered, and then the pair whistled sweetly and joyously together; and when they ceased a bell-bird sounded his clear, resonant note thrice—then silence.
Presently Walter and Harry set about to attempt an ascent, laughing heartily at the thought of how we should startle poor 'King Billy' by reappearing out of the bowels of the earth, instead of by the way we had left him.
The top of the cleft was not more than thirty feet from the floor of the cave, and its very narrowness reduced the difficulty of climbing up its rugged sides, which were composed of pieces of rock embedded in earth. In the centre, however, the walls approached so closely to each other about half way down—within a few inches, in fact—that they were blocked up with what appeared to be a mass of decaying branches, fallen leaves and such débris.
Walter Trenfield went first, then Will, and Harry and I followed. We found it much easier working our way up than we anticipated, for the jutting points of rock gave us a good foothold, and the roots of trees, living and dead, helped us greatly, for some of these grew across from one side of the cleft to the other, and afforded us ladder-like steps.
Walter had nearly reached the mouth of the chasm, when Will, who was ascending more leisurely and carefully behind him, put his foot upon the thick mass of leaves and rotting wood which blocked up its centre, and, finding it was firm, sat down upon it to rest himself. Presently, to have some amusement at the expense of Harry and myself, who were directly beneath him, he began to shower armfuls of dead leaves upon us—then suddenly he uttered a cry of terror, sprang to his feet, and clambered quickly to the top, where Trenfield seized him just as he was about to fall.
Thinking that he had been frightened, or perhaps bitten by a black snake or a death-adder, Harry and I climbed up after him as quickly as possible, little heeding the cuts and bruises we inflicted upon our naked bodies. As soon as we reached the ledge and flung ourselves, panting and somewhat terrified, on the thick bed of leaves which covered the ground like a carpet, we saw Walter Trenfield bending his tall, naked figure over Will, who was crouched up in a heap and trying, through his sobs of terror, to tell what it was that he had seen.