Bat Cave

Refers to an item location in Eastern Kakariko Town at the bottom of the well outside the blacksmith’s house. Most obviously, the Hammer is required to access the Bat Cave to get past the peg blocking the path, but you could also use the Titan Mitts and Mirror to mirror past the peg instead.

Once inside the Bat Cave, Magic Powder is required to gain the item found there.

Maps

Outside: Link
Inside: Link