D&D Icewind Dale Rime of the Frostmaiden Book

Feel the cold touch of death in this adventure for the world's greatest roleplaying game. Beneath the unyielding night sky, you stand before a towering glacier and recite an ancient rhyme, causing a crack to form in the great wall of ice. Beyond this yawning fissure, the Caves of Hunger await. And past this icy dungeon is a secret so old and terrifying that few dare speak of it. The mad wizards of the Arcane Brotherhood long to possess that which the god of winter's wrath has so coldly preserved--as do you! What fantastic secrets and treasures are entombed in the sunless heart of the glacier, and what will their discovery mean for the denizens of Icewind Dale?