Titus Livius (Livy), The History of Rome, Book 21
D. Spillan, A.M., M.D., Cyrus Evans, Ed.

58. For a short time after, while the cold continued intolerable, rest was given to the soldiers; [2] and having set out from his winter quarters on the first and uncertain indications of spring, he leads them into Etruria, intending to gain that nation to his side, like the Gauls and Ligurians, either by force or favour. [3] As he was crossing the Apennines, so furious a storm attacked him, that it almost surpassed the horrors of the [p. 758]Alps. When the rain and wind together were driven directly against their faces, they at first halted, because their arms must either be cast away, or striving to advance against the storm they were whirled round by the hurricane, and dashed to the ground: [4] afterwards, when it now stopped their breath, nor suffered them to respire, they sat down for a little, with their backs to the wind. [5] Then indeed the sky resounded with loud thunder, and the lightnings flashed between its terrific peals; all, bereft of sight and hearing, stood torpid with fear. [6] At length, when the rain had spent itself, and the fury of the wind was on that account the more increased, it seemed necessary to pitch the camp in that very place where they had been overtaken by the storm. [7] But this was the beginning of their labours, as it were, afresh; for neither could they spread out nor fix any tent, nor did that which perchance had been put up remain, the wind tearing through and sweeping every thing away: [8] and soon after, when the water raised aloft by the wind had been frozen above the cold summits of the mountains, it poured down such a torrent of snowy hail, that the men, casting away every thing, fell down upon their faces, rather buried under than sheltered by their coverings; [9] and so extreme an intensity of cold succeeded, that when each wished to raise and lift himself from that wretched heap of men and beasts of burden, he was for a long time unable, because their sinews being stiffened by the cold, they had great difficulty in bending their joints. [10] Afterwards, when, by continually moving themselves to and fro, they succeeded in recovering the power of motion, and regained their spirits, and fires began to be kindled in a few places, every helpless man had recourse to the aid of others. [11] They remained as if blockaded for two days in that place. Many men and beasts of burden, and also seven elephants, of those which had remained from the battle fought at the Trebia, were destroyed.