In course 10, how do I beat "Into the igloo"?

Okay, if you know where the shell that you can surf on is, you're going to need that. Get on it then jump over the path on the water, and look around the giant snow-man mountain-thing. Eventually, you'll see a small hill. Go up that, and do not hit the fence with the shell, otherwise you fall off and slide back down. So jump over the fence, then get off the shell by crouching. Then crawl into the hole (Crouch then push forward). By the way, did I mention you have to have a luigi hat or be luigi? No? Well you have to be. Get his magic "?" box to turn invisible then go back to the entrance and fall through the wire to get the star.

Lugia_Dude

You can use the owl to get there too. He's in the tree with the red star

Well, first you have to be Luigi or have a Luigi Hat, then you have to have the surfing shell. Then if you look to the left of the platform where the moving blocks of ice are, you'll see a ledge. At the top of the ledge, there's a fence. Jump over the fence, and hit the dome with the black hole in the middle, which is the igloo. Crawl into the igloo, which is a maze inside, and in the far left corner, there's a mystery box. Get the power flower and race back to the black hole entrance. You should fall into a cage, where the Star is.