Beyond the Mountains of Madness is a direct sequel to the short story At The Mountains of Madness, in which an expedition from the Miskatonic University in Arkham discovers proof of ancient, alien life. The investigators of this campaign embark on a new expedition, seeking to finish what the first one started—and uncover the truth of what happened to their predecessors.

This printing of Beyond the Mountains of Madness is unchanged from the original vision of the authors. Rules are presented as they were for Call of Cthulhu fifth edition, though can be played with other editions with minor mechanical changes.

Extensive information on Antarctica, including rules for mounting expeditions, and details for 1920s equipment. Expand your campaign, or develop your own Call of Cthulhu scenarios set in the white wastes of the South Pole!