The Shadow out of Time by H.P. Lovecraft

From that point forward my impressions are scarcely to be relied on-indeed, I still possess a final, desperate hope that they all form parts of some daemoniac dream-or illusion born of delirium. A fever raged in my brain, and everything came to me through a kind of haze-sometimes only intermittently. The rays of my torch shot feebly into the engulfing blackness, bringing phantasmal flashes of hideously familiar walls and carvings, all blighted with the decay of ages. In one place a tremendous mass of vaulting had fallen, so that I had to clamber over a mighty mound of stones reaching almost to the ragged, grotesquely stalactited roof. It was all the ultimate apex of nightmare, made worse by the blasphemous tug of pseudo-memory. One thing only was unfamiliar, and that was my own size in relation to the monstrous masonry. I felt oppressed by a sense of unwonted smallness, as if the sight of these towering walls from a mere human body was something wholly new and abnormal. Again and again I looked nervously down at myself, vaguely disturbed by the human form I possessed.

Onward through the blackness of the abyss I leaped, plunged, and staggered-often falling and bruising myself, and once nearly shattering my torch. Every stone and corner of that daemoniac gulf was known to me, and at many points I stopped to cast beams of light through choked and crumbling yet familiar archways. Some rooms had totally collapsed; others were bare or debris-filled. In a few I saw masses of metal-some fairly intact, some broken, and some crushed or battered-which I recognised as the colossal pedestals or tables of my dreams. What they could in truth have been, I dared not guess.