The Colossal Hole

The Colossal Hole is a level located in the east part of the music box world which appeared in Wario Land 3. This level is accessible after acquiring the red Tusk from The Steep Canyon's Red Chest, the blue Tusk from The Stagnant Swamp's Blue Chest, and the Green Flower from The Stagnant Swamp's Red Chest, causing the volcano to erupt. It is unlocked alongside The West Crater.

The Colossal Hole takes place in a large underground level that consists of a deep pit in the middle under a sky. There are many openings to the left and right within the pit, and some of them contains Omodonmeka. Owls are also present in the level, where they will fly high at night and rest during the day.

Gray Chest: Left Glass Eye
The Left Glass Eye in the Gray Chest, which is accessible from the start.

To get the Gray Key in the upper area, Wario must first go to the lower area to use one of the Pneumos to trigger Puffy Wario, and then ascend to the top while avoiding the spikes to reach the upper area. In the upper area, Wario must float so that he crosses the thin platform, where the Gray Key is in between breakable blocks.

After acquiring the Gray Key, Wario must go back to the lower are. In the lower area, the left Pneumo must be used to trigger Puffy Wario, and then float up and to the left to the platform where the Omodonmeka is. After deflating, Wario must make his way to the left where the Gray Chest is.

The Left Glass Eye, along with the Right Glass Eye from The West Crater's Gray Chest, are used to fit into the snake's eye sockets on the blue door at Tower of Revival, opening up the door found there.

Red Chest: Air-Pump
The in the Red Chest requires the Garlic treasure from the Tower of Revival's Red Chest.

To get the Red Key, Wario must go all the way down to the bottom of the lower area and to the right, where there are solid blocks next to the Omodonmeka. There is a room past the blocks, which contains a Spearhead. The one-tile-wide floor is treated as a series of Enemy Blocks, so the Spearhead must be thrown on it to break through it, allowing Wario to reach the Red Key.

In order to reach the Red Chest, the Golf minigame must be played in the upper area to lift the mini-game block in the lower area. To reach the door containing the Golf minigame, the Omodonmeka with the Omodon on the left side in the upper area must be used to trigger Flat Wario. To get there, Wario can go left and climb up the ladder all the way up, or use Puffy Wario triggered by the Pneumo to go to the upper area and to the left. After being flattened, Wario must descend to the platform where there is a Gray Key underneath. From there, he must go left to the narrow gap to get the Omodonmeka to unflatten him, break the blocks to the left, go up the ladder, and then jump up the platforms to the Golf minigame room. After completing the minigame, Wario must go to where the mini-game block is. To get there, there are two ways: The first way is to go back to the beginning and be squashed by the Omodon again, this time descending to the lower area to slowly descend to the right where the mini-game block is (Flat Wario is immune to spikes), after which Wario must unflatten himself with the Omodonmeka past the block; the other way is to go to the lower area, and then use a Dash Attack to the right, after that dropping to the left while crouching and then hugging the right to reach past the narrow gap. In the room past the mini-game block, there is a wall of breakable blocks to the right, and another wall of breakable blocks up and to the left. Breaking past the blocks is needed to reach the Red Chest.

The Air-Pump makes the glass containers rise in The Pool of Rain and Bank of the Wild River, allowing Wario to enter the room underneath it in the former and reach a higher area with it in the latter.

Green Chest: High Jump Boots
The High Jump Boots power-up in the Green Chest requires the Top Half of Sun Medallion from Sea Turtle Rocks' Green Chest and the Bottom Half of Sun Medallion from Desert Ruin's Blue Chest are required, so that daytime can happen on the eastern part of the world. Unlike the other two chests in the east where daytime is required, this Chest cannot be obtained in the nighttime at first, as this treasure is required for it.

From the start, the owl at the beginning perches and sleeps, allowing Wario to more easily reach it. After riding the Owl, Wario must make his way down and to the right, still in the upper area, so that he reaches the right side where there is a maze of spike to navigate through. At the end of the maze, there is a door. The room within the door is open, where the upper area consists of the Sun and the lower area consists of a Spear-bot and Brrr Bears. To get to the Green Key, Wario must first make his way up to the sky and then go right to the rightmost platform above the sky, and then wait for the Sun to breathe fire to trigger Hot Wario, waiting for Wario to be enveloped in flames to be able to break the Bonfire Blocks to collect the Green Key. (If this level is visited in the nighttime, the Brrr Bears are replaced with Fire Robotas to trigger Hot Wario so that the Bonfire Blocks can be broken.)

After acquiring the Green Key, Wario must make his way to the left, and then go up again to wait for the Sun to breathe fire on him to trigger Hot Wario again, this time ensuring that he is on the floor where the Bonfire Blocks are, in order to break them after Wario is enveloped in flames. After breaking through the blocks, the Green Chest can be reached. (If this level is visited in the nighttime, the nearby Fire Robota can be used for the same purpose of triggering Hot Wario to break the Bonfire Blocks.)

The High Jump Boots allow him to access the High Jump power-up. It allows Wario to jump higher and also bounce off enemies for a jump boost. This opens up the way to new treasures in The Grasslands, The Stagnant Swamp, and Cave of Flames.

Blue Chest: Locomotive
The in the Blue Chest requires blowing up the bomb found in this level using the Explosive Plunger Box from Beneath the Waves' Gray Chest. This causes the ceiling with an attached bomb to drop down, allowing the door originally below it to be entered.

From the beginning Wario must go outside the hole and then go right. He can do this by riding an owl or float up with Puffy Wario using a Pneumo found in the lower area. The room outside the hole has many snake pots inside, though not all pots contain snakes. To reach the Blue Key, Wario must go all the way to the right, and then jump from the snake's heads and platforms to reach the ceiling, where the key is to the left within a recess.

From the Blue Key, Wario must descend from there to the bottom, and then go left to a snake to jump up from the snake's heads and platforms upwards, until reaching near the top to the left, where the Blue Chest is.

The Locomotive does not affect the world in any way.

Enemies

 * Omodonmeka (6, 1 carrying Omodon)
 * Omodon (1)
 * Snake (8)
 * Pneumo (2)
 * Spearhead (1)
 * Spear-bot (1)
 * Sun (1, day only)
 * Brrr Bear (2, day only)
 * Mr. Moon (1, night only)
 * Fire Robota (2, night only)

Reaction abilities in this level

 * Electric Wario (via Mr. Mooon)
 * Flat Wario (via Omodon)
 * Hot Wario (via Sun or Fire Robota)
 * Ice Skatin' Wario (via Brrr Bear)
 * Puffy Wario (via Pneumo)