"Dreamscaping is a technique which can be useful within a magical system such as the Cthulhu Mythos. A rigorous dream-diary is kept, and dreams which have consistent Mythos elements can become the basis of astral sequences of images, performed as a meditation. If these sequences are followed through as one drifts into sleep, one may find, in time, that Mythos Dreams become increasingly vivid, and the dream-experience can continue the consciously-created narrative. Eventually, one can search for specific clues and locations within the Personal Dream-time which is being woven."
(Hine, Phil. 2006. Prime Chaos)