Twin Mold

Twin Mold was one of the four guardians of Termina. It was said to resemble two giant worms that could fly and dig within the earth. The creature dwelt within a large desert like area of the Stone Towers and could only be defeated by the use of a mask that made the wearer a giant! Twin Mold was defeated by Link, who used the Giant Mask, and restored Ikhana Valley to its previous vitality.

Zelda 6