The Abandoned Cave, also known as the Zombie Cave, is a cave on Ashium Island. The Cave contains both Coal Ore and Gold Ore deposits for mining.
The Abandoned cave is slightly south of the center of Ashium Island. A Song is required to break the rocks at its entrance.
Bring the Mysterious Amulet to the portal to spawn a series of zombies. Defeating them will yield the Key of Sevens 2.
Bring a Dragon Egg to the portal to receive the Ring of the Ghost Dragon.