Stoneslide Tower

Stoneslide Tower, or , is the second tower in New Super Mario Bros. U. It features stone platforms that are movable by spinning on wooden screws. After completing this level for the first time, Kamek will fly around Peach's Castle and a tornado will start to form around it. This level is unlocked by completing either Perilous Pokey Cave or Fire Snake Cavern, and completing this level unlocks a labyrinth of connected Stone-Eyes on the overworld map that serve as the location for both Goomba and Fire Bro. enemy courses. Navigating the enemy courses unlocks Spike's Spouting Sands and Dry Desert Mushrooms.

Layout
The course has large stone platforms that can be moved by spinning on wooden screws. Grrrols make their appearance in this tower. At the top, there is a boss battle with a Boom Boom.

Star Coins

 * Star Coin 1: At the beginning, rotate the screw and use the stone platform to jump onto a ledge on the left.
 * Star Coin 2: Rotate the third screw encountered, then run to the left and Wall Jump up.
 * Star Coin 3: Above the Midway Flag, rotate the screw next to some quicksand. It will rise the stone platfrom next to it. Run under it and jump along the left wall to discover a hidden warp pipe. Inside, use the screw to move the platform and guide the Grrrols so that they'll break the stone blocks. Then, by carefully avoiding them, go left and grab the third Star Coin.

Enemies

 * Spike Tops
 * Dry Bones
 * Big Dry Bones
 * Grrrols
 * Boss: Boom Boom

Trivia

 * Stoneslide Tower is the only level in New Super Mario Bros. U to be unlocked by completing one of two levels that unlocks two levels by being completed.