Glyphos is an experimental sludge doom from the members of the bands IL, Khlad and Disillumination.
Yellow Sign is their only album. The idea of the album is based on the works of Robert Chambers and H. F. Lovecraft and takes listeners to the shores of Lake Hali, to the fictional land of Carcosa, to the sounds of a play that will drive them crazy by the end.
The album was recorded using the theremin, a rare instrument in extreme metal.
