Hydra by Henry Kuttner | A Cthulhu Mythos Story

HYDRA (horrorbabble.bandcamp.com/album/fringes-of-the…) is a Cthulhu Mythos story by Henry Kuttner, first published in the April 1939 edition of Weird Tales. "A unique tale of the fourth dimension, a dangerous experiment in occultism, and the ghastly horror that reached back from that other plane of space."