"The entrance to it is. That is just the safeguard which we have against anyone else discovering it."
"Does the proprietor know of it?"
"Not he. He had found one or two objects which made me almost certain that his house was built on the entrance to such a place. So I rented it from him, and did my excavations for myself. Come in, and shut the door behind you."
It was a long, empty building, with the mangers of the cows along one wall. Burger put his lantern down on the ground, and shaded its light in all directions save one by draping his overcoat round it.
"It might excite remark if anyone saw a light in this lonely place," said he. "Just help me to move this boarding."
The flooring was loose in the corner, and plank by plank the two savants raised it and leaned it against the wall. Below there was a square aperture and a stair of old stone steps which led away down into the bowels of the earth.
"Be careful!" cried Burger, as Kennedy, in his impatience, hurried down them. "It is a perfect rabbits'-warren below, and if you were once to lose your way there the chances would be a hundred to one against your ever coming out again. Wait until I bring the light."
"How do you find your own way if it is so complicated?"
"I had some very narrow escapes at first, but I have gradually learned to go about. There is a certain system to it, but it is one which a lost man, if he were in the dark, could not possibly find out. Even now I always spin out a ball of string behind me when I am going far into the catacomb. You can see for yourself that it is difficult, but every one of these passages divides and subdivides a dozen times before you go a hundred yards."
They had descended some twenty feet from the level of the byre, and they were standing now in a square chamber cut out of the soft tufa. The lantern cast a flickering light, bright below and dim above, over the cracked brown walls. In every direction were the black openings of passages which radiated from this common centre.
"I want you to follow me closely, my friend," said Burger. "Do not loiter to look at anything upon the way, for the place to which I will take you contains all that you can see, and more. It will save time for us to go there direct."
He led the way down one of the corridors, and the Englishman followed closely at his heels. Every now and then the passage bifurcated, but Burger was evidently following some secret marks of his own, for he neither stopped nor hesitated. Everywhere along the walls, packed like the berths upon an emigrant ship, lay the Christians of old Rome. The yellow light flickered over the shrivelled features of the mummies, and gleamed upon rounded skulls and long, white armbones crossed over fleshless chests. And everywhere as he passed Kennedy looked with wistful eyes upon inscriptions, funeral vessels, pictures, vestments, utensils, all lying as pious hands had placed them so many centuries ago. It was apparent to him, even in those hurried, passing glances, that this was the earliest and finest of the catacombs, containing such a storehouse of Roman remains as had never before come at one time under the observation of the student.
"What would happen if the light went out?" he asked, as they hurried onwards.
"I have a spare candle and a box of matches in my pocket. By the way, Kennedy, have you any matches?"
"No; you had better give me some."
"Oh, that is all right. There is no chance of our separating."
"How far are we going? It seems to me that we have walked at least a quarter of a mile."
"More than that, I think. There is really no limit to the tombs–at least, I have never been able to find any. This is a very difficult place, so I think that I will use our ball of string."
He fastened one end of it to a projecting stone and he carried the coil in the breast of his coat, paying it out as he advanced. Kennedy saw that it was no unnecessary precaution, for the passages had become more complex and tortuous than ever, with a perfect network of intersecting corridors. But these all ended in one large circular hall with a square pedestal of tufa topped with a slab of marble at one end of it.
"By Jove!" cried Kennedy in an ecstasy, as Burger swung his lantern over the marble. "It is a Christian altar–probably the first one in existence. Here is the little consecration cross cut upon the corner of it. No doubt this circular space was used as a church."
"Precisely," said Burger. "If I had more time I should like to show you all the bodies which are buried in these niches upon the walls, for they are the early popes and bishops of the Church, with their mitres, their croziers, and full canonicals. Go over to that one and look at it!"
Kennedy went across, and stared at the ghastly head which lay loosely on the shredded and mouldering mitre.
"This is most interesting," said he, and his voice seemed to boom against the concave vault. "As far as my experience goes, it is unique. Bring the lantern over, Burger, for I want to see them all."
But the German had strolled away, and was standing in the middle of a yellow circle of light at the other side of the hall.
"Do you know how many wrong turnings there are between this and the stairs?" he asked. "There are over two thousand. No doubt it was one of the means of protection which the Christians adopted. The odds are two thousand to one against a man getting out, even if he had a light; but if he were in the dark it would, of course, be far more difficult."
"So I should think."
"And the darkness is something dreadful. I tried it once for an experiment. Let us try it again!" He stooped to the lantern, and in an instant it was as if an invisible hand was squeezed tightly over each of Kennedy's eyes. Never had he known what such darkness was. It seemed to press upon him and to smother him. It was a solid obstacle against which the body shrank from advancing. He put his hands out to push it back from him.
"That will do, Burger," said he, "let's have the light again."
But his companion began to laugh, and in that circular room the sound seemed to come from every side at once.
"You seem uneasy, friend Kennedy," said he.
"Go on, man, light the candle!" said Kennedy impatiently.
"It's very strange, Kennedy, but I could not in the least tell by the sound in which direction you stand. Could you tell where I am?"
"No; you seem to be on every side of me."
"If it were not for this string which I hold in my hand I should not have a notion which way to go."
"I dare say not. Strike a light, man, and have an end of this nonsense."
"Well, Kennedy, there are two things which I understand that you are very fond of. The one is an adventure, and the other is an obstacle to surmount. The adventure must be the finding of your way out of this catacomb. The obstacle will be the darkness and the two thousand wrong turns which make the way a little difficult to find. But you need not hurry, for you have plenty of time, and when you halt for a rest now and then, I should like you just to think of Miss Mary Saunderson, and whether you treated her quite fairly."
"You devil, what do you mean?" roared Kennedy. He was running about in little circles and clasping at the solid blackness with both hands.
"Good-bye," said the mocking voice, and it was already at some distance. "I really do not think, Kennedy, even by your own showing that you did the right thing by that girl. There was only one little thing which you appeared not to know, and I can supply it. Miss Saunderson was engaged to a poor ungainly devil of a student, and his name was Julius Burger."