You're running through the biting winds of Shiveria, Cappy in hand, wondering why on earth you can't find that one specific shine. It happens to everyone. Super Mario Odyssey is a massive game, but the Snow Kingdom has a way of hiding things in plain sight that makes you want to throw your Switch across the room. Specifically, we're talking about Snow Kingdom Moon 34, officially known as "Water Treatment Plant" in the game's internal checklist.
It's not just a collectible. For completionists, it’s a roadblock.
Most players stumble into the Snow Kingdom—the Shiveria region—expecting a simple winter wonderland. Instead, they get a giant hole in the ground and a series of subterranean challenges that feel like a fever dream. Moon 34 isn't out in the open where you can just triple-jump your way to victory. You have to work for it. You have to breathe underwater. Well, Mario does.
Where the Heck is the Water Treatment Plant?
To get your hands on Snow Kingdom Moon 34, you need to head back to the main hub of Shiveria. You know the place. It's the town full of those adorable, round, bumbling Shiverians who are obsessed with racing. Once the main blizzard outside has been cleared—because let’s be real, you aren't doing much of anything while that storm is raging—you can start hunting for the more "hidden" Power Moons.
Basically, you’re looking for a specific pipe.
In the main town square of Shiveria, look toward the back area where the four main paths converge. There is a pool of water. It looks cold. It looks uninviting. But that’s where the secret lies. You need to dive into the water and find the entrance to the "Water Treatment Plant" sub-area. It’s a classic Mario trope: the secret level hidden inside the hub world. Honestly, if you aren't checking every corner of a Nintendo town, are you even playing the game right?
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The Mechanics of Moon 34
Once you enter the warp pipe, the atmosphere changes. You’re in a specialized challenge room. This isn't a "run and jump" kind of moon. It’s a "don't drown and time your movements" kind of moon.
The room is filled with toxic water. Or maybe it's just really, really dirty water? Whatever it is, it's purple and it kills you. You have to navigate a series of platforms and rotating structures to reach the end. The "Water Treatment Plant" name is literal; you're basically cleaning up the town's plumbing.
Here is the thing about Snow Kingdom Moon 34: people often miss the second moon in this room. But we're focusing on the primary one. To get the main Power Moon, you have to navigate the rising and falling water levels. It’s all about the rhythm. Mario’s physics in Odyssey are crisp, but the water levels introduce a floatiness that can catch you off guard if you’re rushing.
- Watch the bubbles. They usually indicate where it’s safe to stand.
- Use the Fire Bros. If you see enemies, capture them. Their projectiles can often trigger switches that make your life easier.
- Don't forget to shake the controller. If you're playing with Joy-Cons or a Pro Controller, the spin throw covers more ground and can help you clear obstacles faster.
Why Shiveria is Such a Pain (and Why We Love It)
The Snow Kingdom is weird. It’s officially the "Sand Kingdom's" polar opposite, and not just because of the temperature. While Tostarena is wide open and sprawling, Shiveria is vertical and claustrophobic. Snow Kingdom Moon 34 exemplifies this design philosophy. You’re tucked away in a corner of a corner.
Many players get stuck because they assume every moon is tied to the Bound Bowl Grand Prix. While the racing is the "main" event, the best content in Odyssey is often tucked away in these sub-rooms. The developers at Nintendo, led by Kenta Motokura, clearly wanted to reward players who treated the game like an archeological dig.
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I’ve seen speedrunners tackle this area, and it’s a work of art. They don’t even wait for the platforms. They use precise wall jumps and Cappy-dives to bypass the intended route. For the rest of us mortals, we have to wait for the water to recede. It’s a test of patience.
Common Mistakes at the Water Treatment Plant
If you’re struggling to grab Moon 34, you might be making one of these mistakes.
First, don't ignore the coins. In Odyssey, coins often act as breadcrumbs. If you see a trail of regional purple coins or even standard gold ones, follow them. They usually lead directly to the optimal path for the Power Moon. In the case of the Water Treatment Plant, the coins guide you through the timing of the rising tides.
Second, check your captures. The entire gimmick of Super Mario Odyssey is the "Capture" mechanic. If there is a Cheep Cheep or a Fire Bro nearby, there is a 90% chance you need them to make the platforming easier. For Moon 34, staying in Mario's human form is fine, but capturing an enemy can provide a safety net you didn't know you needed.
Third, look up. Or behind you. Nintendo loves putting the entrance to a sub-area right behind where you spawned. When you enter the town of Shiveria, turn the camera 180 degrees. You’d be surprised how many secrets are sitting right behind your back.
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The Lore of the Snow Kingdom
Is there "lore" in a Mario game? Sort of. Shiveria is an ancient place. The Shiverians themselves are legendary racers, but they are also lazy. They let their water treatment plant get overrun with sludge. That’s where you come in. By collecting Snow Kingdom Moon 34, you aren't just fueling the Odyssey; you're technically performing a public service for a bunch of round polar bear-people who would rather be napping.
There’s a certain charm to that. It’s not a high-stakes battle against Bowser (though that comes later). It’s just Mario, helping out a local community by jumping on things.
The Snow Kingdom is often ranked mid-tier in "Best Odyssey Kingdoms" lists, usually falling behind the Metro Kingdom or the Seaside Kingdom. But the density of Shiveria is unmatched. Because the "surface" is so small, the underground is packed tight with challenges like Moon 34. It’s efficient game design.
Actionable Steps to Claim Your Moon
If you're sitting with your Switch right now, here is the exact sequence to finish this:
- Clear the Blizzard: You cannot access the town's full potential until you've defeated Rango and the boss of the Snow Kingdom (the giant mechanical wind-maker).
- Find the Hole: Drop into the center of the Shiveria map to enter the town.
- Locate the Pipe: Find the pool of water in the town hub. It’s near the race track entrance. Look for the pipe submerged in the water.
- Master the Rhythm: Once inside the Water Treatment Plant, don't rush. Watch the purple water rise and fall twice before you make a move. This will give you the timing for the platforms.
- Grab the Moon: Reach the end of the corridor. The Power Moon will be waiting on a pedestal.
Once you have Moon 34, don't just leave. There is usually a hidden "sub-moon" in every one of these rooms. Check the ceilings or the far corners of the room for a second Power Moon (Moon 35) before you head back to the Odyssey.
Collecting every moon in Shiveria takes work. It’s cold, the physics are slippery, and the racers are faster than they look. But getting Moon 34 off your list is a huge step toward that 100% completion mark. Grab your hat, watch your breath meter, and get diving. Shiveria isn't going to clean itself.