Icicle Cavern

Walkthrough: As you enter Icicle Cavern, you will need to head across narrow platforms without falling to peril. To make things all the more difficult, you'll have to watch the ground to spot shadows that mark where giant icicles will come crashing down at Mario. Luckily, there will be Goombas that can be captured to help you across the platforms, as they have incredible traction. After reaching the next area, you will find two additional Goombas. An icicle will fall that will create a stair to a Goomba-shaped pressure platform, having the number four on it that can open up another Power Moon.

After obtaining it, cross the next couple of platforms as you watch out for falling objects. Proceed to the right and take a series of steps and falling icicles to reach a large platform.Here, you can stack more Goombas to reach more Purple Coins. You can even obtain a few more in the back against two walls by wall jumping. After obtaining all of those Coins, run under each of the shadows within the circle of ice. This will cause three icicles to make the entire floor to drop as one giant icicle, dropping you down further to the Power Moon that unlocks part of the barrier around the aforementioned race track. Head back to the main hall in Shiveria Town after obtaining it, going down the path on the upper right toward Hollow Crevasse.