Wario Land 3: Part 46: The Big Bridge (Blue Chest)

Wario's Scepter cleared the murky black water in The Big Bridge, revealing a hidden doorway. First, go through the doorway above it to complete a short course and obtain the Blue Key. In the doorway’s room, avoid obstacles and use Bubble Wario to reach and break Purple Blocks. On dry land, crouch‑jump through openings that the blocks blocked to reach the Blue Chest, which contains a Lantern. Wario can use the Lantern’s Magical Fire to reveal a mountain on the south side of the world, which is actually the Castle of Illusions.