Without warning came those deep, cracked, raucous vocal sounds which will never leave the memory of the stricken group who heard them. Not from any human throat were they born, for the organs of man can yield no such acoustic perversions. Rather would one have said they came from the pit itself, had not their source been so unmistakably the altar-stone on the peak. It is almost erroneous to call them sounds at all, since so much of their ghastly, infra-bass timbre spoke to dim seats of consciousness and terror far subtler than the ear; yet one must do so, since their form was indisputably though vaguely that of half-articulate words. They were loud—loud as the rumblings and the thunder above which they echoed—yet did they come from no visible being. And because imagination might suggest a conjectural source in the world of non-visible beings, the huddled crowd at the mountain's base huddled still closer, and evinced as if in expectation of a blow.