The Lurking Fear by H.P. Lovecraft

There can be nothing normal in the mind of one who, knowing what I knew of the horrors of Tempest Mountain, would seek alone for the fear that lurked there. That at least two of the fear's embodiments were destroyed, formed but a slight guarantee of mental and physical safety in this Acheron of multiform diabolism; yet I continued my quest with even greater zeal as events and revelations became more monstrous.

When, two days after my frightful crawl through that crypt of the eyes and claw, I learned that a thing had malignly hovered twenty miles away at the same instant the eyes were glaring at me, I experienced virtual convulsions of fright. But that fright was so mixed with wonder and alluring grotesqueness that it was almost a pleasant sensation. Sometimes, in the throes of a nightmare when unseen powers whirl one over the roofs of strange dead cities toward the grinning chasm of Nis, it is a relief and even a delight to shriek wildly and throw oneself voluntarily along with the hideous vortex of dream-doom down into whatever bottomless gulf may yawn. And so it was with the waking nightmare of Tempest Mountain; the discovery that two monsters had haunted the spot gave me ultimately a mad craving to plunge into the very earth of the accursed region, and with bare hands dig out the death that leered from every inch of the poisonous soil.