The Abandoned Cave, also known as the Zombie Cave, is a cave in Ashium The Cave contains both Coal Ore and Gold Ore deposits for mining.
The Abandoned cave is located to the East of Ashium, North of the entrance to Heaven.
Bring the Mysterious Amulet to the obelisk at the bottom left corner of the cave. It will give you the Key of Sevens 2 To reach the obelisk, you need 10 lengths of Rope to swing across the support column.
Run up to the portal on the right to spawn a series of zombies. They give good exp.