Trail of Tsathogghua

Trail of Tsathogghua is a Horror tabletop role-playing adventure, written by Keith Herber, with art by Steve Purcell, and published by Chaosium in 1984. It was released in PDF format in 2004. Three horror adventures set Greenland, Canada and Grand Rapids, Michigan" for Call of Cthulhu", based on author Clark Ashton Smith's, god-like literary creation Tsathoggua.
Contents.
"Trail of Tsathogghua" is an adventure in which the player characters investigate a stone slab covered with unusual markings that was discovered in Greenland by Eskimos.
Reception.
Rick Swan reviewed "Trail of Tsathogghua" in "The Space Gamer" No. 75. Swan commented that "If you've been happily devouring Chaosium's "Cthulhu" releases, rest assured that "Trail of Tsathogghua" is another top-notch effort. This is roleplaying at its finest, and I'm ready for the next one. And who knows . . . maybe it'll even have a title I can pronounce."