The Angler's Tunnel is the fourth Dungeon in Link's Awakening. It is the location of the Surf Harp. The entrance to Angler's Tunnel, which is shaped like a Fish's head, is behind a raging waterfall at the base of the Tal Tal Mountain Range. The mini-boss of the Dungeon is Cue Ball, whose backside is vulnerable to Link's Sword. The main item of this Dungeon is the Flippers, which allow Link to swim and dive. This is necessary for fighting the Boss, the Angler Fish.