The Mountains are snow-covered peaks, cold enough to hurt you without the right gear. They are step 4 of 8 in the progression, coming after the Swamp and before the Plains. Several creatures live here: Wolf with 80 health, Drake with 100, Fenring with 300, Skeleton (mountains) with 75, and Stone Golem, the toughest of them with 800 health.
You gather two resources here, Obsidian and Silver Ore, and both are mined from a deposit. The biome's boss is Moder, who has 7500 health. To summon Moder, place 3 Dragon Eggs on the altar. Moder drops a Moder Trophy and a Dragon Tear.
The materials from this biome unlock 6 weapons and shields: Crystal Battleaxe, Draugr Fang, Fang Spear, Silver Knife, Silver Shield and Silver Sword. They also unlock 4 pieces of armor: Drake Helmet, Wolf Fur Cape, Wolf Hide Chestpiece and Wolf Hide Trousers. There is 1 food or mead as well, Eyescream. The places you can find in the Mountains are the Drake lorestone, Drake nest, Frost cave, Hildir's cave, Moder's altar, Mountain cave and Runestone mountains.
