Inspired by H.P. Lovecraft's novella, this expansion allows you to trace the path of a doomed expedition and enter the immense City of the Elder Things. What happens in Antarctica has worldwide repercussions as freshly-awakened horrors spread across the globe.

Eight investigators offer new roles to play as you confront these chilling, inhuman threats. Numerous additional Assets, Spells, Artifacts and Conditions may help investigators or harm them, and for the first time, Adventures and Prelude cards shape the international struggle against the Ancient Ones. Do you have the strength to survive Antarctica's frozen wastes, encounter the Mountains of Madness, and stave off the end of human civilization?