first you have to get your horse then go to the spider temple at the great bay(go to the ocean). make sure you have the captains hat, because there is the troops ther. you have to have a hook shot too. the goron mask, some bombs. fire arrow, and magic potions( unless you drank that chataue milk from the the milk bar). then you have to complete it in either the first or second day i theink. after you complete it you shiuld see a man in green clothes that says he never knew that that place was there.

u need to beat the second level of the spider house on great bay