This map of Kleever's Kiln features a significant amount of terrain that is inaccessible during the battle. According to a Tweet by developer Gregg Mayles, this area was originally planned to feature a Squawks Barrel! The first 576 pixels of this map's width displays this extra area, which is empty of objects, and goes unseen in-game.
Hooks appear in various configurations after Kleever is first hit with a cannonball. The arrangement shown here is the final (and most prevalant) configuration.
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