Swamp Spider House
From Zelda Wiki.org
The Swamp Spider House is a house full of Gold Skulltulas, found in the Southern Swamp in Majora's Mask. One unlucky person went into the house and was cursed by the Gold Skulltulas, causing him to be turned into a Skulltula-like creature himself. The only way to lift the curse is for the thirty Gold Skulltulas in the house to be killed and their spirits harvested as proof of their defeat.
The entrance to the house itself is blocked by a spiderweb that must be burned in order to gain entry. The Swamp Spider House has several puzzles that cannot be completed without the aid of the bow. Magic Beans are also a possible necessity, as several areas cannot be reached without the platform that the beans provide; however, this problem can be circumvented with the extra jumping power provided by the Bunny Hood. The Gold Skulltulas are hiding all over the house, in various nooks and obscured by pillars and pots. Link must use all of his skills to find all thirty Gold Skulltulas.
Once the Gold Skulltulas are defeated, the curse upon the man will be lifted, and he will express his thanks to Link by giving him the Mask of Truth. The man himself seems to work at Romani Ranch and goes back when freed.
