Prison of Ice (quest)

From Diablo Wiki

In the Prison of Ice quest, the hero must find Anya, who has been imprisoned in the Frozen River. Once they find her, they must go back to Harrogath to get a potion that will thaw and free Anya. Anya will head back to the city, and she will give the player a Class-specific Item custom-made by Larzuk. She will also become the one to see if you wish to Gamble. Also, Malah will reward the player with a scroll, which permanently adds +10% to all of the player's resistances - a total of three scrolls (permanent +30% resistances) for completing the quest on all difficulty levels.

Diablo II and Lord of Destruction quests
Diablo II quests
Act I — Den of Evil • Sisters' Burial Grounds • Search for Cain • Forgotten Tower • Tools of the Trade • Sisters to the Slaughter Act II — Radament's Lair • Horadric Staff • Tainted Sun • Arcane Sanctuary • The Summoner • Seven Tombs Act III — The Golden Bird • Blade of the Old Religion • Khalim's Will • Lam Esen's Tome • Blackened Temple • The Guardian Act IV — Fallen Angel • Hell's Forge • Terror's End
Diablo II: Lord of Destruction quests
Act V — Siege on Harrogath • Rescue on Mount Arreat • Prison of Ice • Betrayal of Harrogath • Rite of Passage • Eve of Destruction