Read it through once

He listened. The wind, playing upon the edifice, produced a booming tune, like the note of some gigantic one-stringed harp. No other sound came from it, and lifting his hand and advancing a step or two, Clare felt the vertical surface of the structure. It seemed to be of solid stone, without joint or moulding. Carrying his fingers onward he found that what he had come in contact with was a colossal rectangular pillar; by stretching out his left hand he could feel a similar one adjoining. At an indefinite height overhead something made the black sky blacker, which had the semblance of a vast architrave uniting the pillars horizontally. They carefully entered beneath and between; the surfaces echoed their soft rustle; but they seemed to be still out of doors. The place was roofless. Tess drew her breath fearfully, and Angel, perplexed, said—