Snowpeak Ruins

Snowpeak Ruins is the fifth dungeon of The Legend of Zelda: Twilight Princess. The item is the Ball and Chain, the miniboss is Darkhammer, and the boss is Blizzeta.

Story
The dungeon is located in a crumbling mansion precariously perched in the mountains of Hyrule's Peak Province. It is inhabited by Yeto, Yeta, and a number of ice-based enemies.

After Link meets Yeto at the top of Snowpeak, he learns that the yeti has found a piece of the Mirror of Twilight, which he has stored back at his house. The pair snowboard back to Yeto's home, where Link sets about trying to find the key to the mansion's master bedroom, where the Mirror Shard apparently has been held. Yeto, meanwhile, attempts to help his wife to recover from an illness by cooking soup for her.

Eventually Link finds the key and Yeta recovers. However, when she leads Link to the Mirror Shard, she is posessed and transforms into the boss of the dungeon, Blizzeta. Link defeats her, returning her to her original form, and earning the Mirror Shard as a reward.

Dungeon
The front few rooms of the house are fairly safe, being the main living quarters of the yetis. In this area, the kitchen, Yeto can be found cooking, and the adventurous Oocca, Ooccoo, can be found hidden behind several nearby crates. The back parts of the mansion are infested with monsters, including a monstrous mini-boss called Darkhammer who wields a Ball and Chain. After defeating him, Link takes the weapon for himself.

Trivia

 * Various paintings in the ruins display Ordon Village, Arbiter's Grounds and the Temple of Time.