Explore the haunted vastness of Antarctica in Mountains of Madness, the first side board expansion for Eldritch Horror! Inspired by H.P. Lovecraft's tale of a Miskatonic University expedition ravaged by sinister and inhuman creatures, Mountains of Madness challenges players to confront the terrors that Miskatonic' s doomed expedition unearthed. Antarctica's harsh conditions and primeval horrors are brought to life through the side board and accompanying encounter deck, and while new Gates open and new Monsters surface, eight investigators arrive, ready to join your struggles against the Ancient Ones.