New Super Luigi U: Peach's Castle-3 -- Hot Cogs

It's time to platform on cogs in lava. The first Star Coin is in the first cog. It may disappear into the lava. The second Star Coin is over a cog that is low in the lava. Jump carefully. There's a hidden 8-bit Luigi nearby. Get the Red Coins if you like, then dodge the Podoboos. The third Star Coin is under a ledge, guarded by Podoboos. You can either try to run and get it if you're powered up enough, or use an Ice Flower to get rid of the Podoboos. There are cogs in front of the flagpole.