Through the Gates of the Silver Key by H.P. Lovecraft

The hills beyond Arkham are full of a strange magic -- something, perhaps, which the old wizard Edmund Carter called down from the stars and up from the crypts of nether earth when he fled there from Salem in 1692. As soon as Randolph Carter was back among them he knew that he was close to one of the gates which a few audacious, abhorred and alien-souled men have blasted through titan walls betwixt the world and the outside absolute. Here, he felt, and on this day of the year, he could carry out with success the message he had deciphered months before from the arabesques of that tarnished and incredibly ancient silver key. He knew now how it must be rotated, and how it must be held up to the setting sun, and what syllables of ceremony must be intoned into the void at the ninth and last turning. In a spot as close to a dark polarity and induced gate as this, it could not fail in its primary functions.

Certainly, he would rest that night in the lost boyhood for which he had never ceased to mourn.