We recommend you first unlock the Metal Mario powerup before attempting this Star. If you haven’t unlocked the Metal Mario Cap, click here to view that walkthrough. Reaching the Toxic Maze For ...

It is inside the Invisible Maze. Make your way over to the Skull Sign in the first room, then fling your hat onto it. Hold the throw button until it spits out a hidden Power Moon.

The maze, now under new proprietorship, appears to be overgrown and falling apart. A redditor posted the photo below noting that his friend works security for the land's new owner.