The wind penetrated the cavity at some distance, and through some opening that could not be beheld, and was apparently intercepted in its passage, for it whistled upwards towards the entrance in shrill, winding notes, sometimes producing another and nearer sound, resembling the clashing of many small metallic substances violently shaken together.

The noise of the wind, as well as the bubbling of the current of the Tiber, seemed to proceed from a greater distance than appeared compatible with the narrow extent of the back part of the temple, and the proximity of the river to its low foundation walls.
It was evident that the vault only reached its outlet after it had wound backwards, underneath the building, in some strange complication of passages or labyrinth of artificial caverns, which might have been built long since as dungeons for the living, or as sepulchres for the dead.
'The place of the sacrifice--aha! the place of the sacrifice!' cried the Pagan exultingly, as he drew Numerian to the entrance of the cavity, and solemnly pointed into the darkness beneath.
The father gazed steadily into the chasm, never turning now to look on Antonina, never moving to renew the struggle for freedom.

Earthly loves and earthly hopes began to fade away from his heart--he was praying.

The solemn words of Christian supplication fell in low, murmuring sounds from his lips, in the place of idolatry and bloodshed, and mingled with the incoherent ejaculations of the madman who kept him captive, and who now bent his glaring eyes on the darkness of the vault, half forgetful, in the gloomy fascination which it exercised even over him, of the prisoners whom he held at its mouth.
The single ray of light, admitted from the circular aperture of the wall, fell wild and fantastic over the widely-differing figures of the three, as they stood so strangely united together before the abyss that opened beneath them.

The shadows were above and the shadows were around; there was no light in the ill-omened place but the one vivid ray that streamed over the gaunt figure of Ulpius, as he still pointed into the darkness; over the rigid features of Numerian, praying in the bitterness of expected death; and over the frail youthful form of Antonina as she nestled trembling at her father's side.