World 8-2 (New Super Mario Bros. Wii)
From the Super Mario Wiki, the Mario encyclopedia
This level begins above ground, in a section with volcanic debris and rolling hills. A Warp Pipe leads the player to an underground area filled with more lava. Multiple rolling hills are found, with a ? Block containing a power-up above it. There is a section with Paragoombas on rolling hills, with some rolling Spike Balls following. Hefty Goombas are found climbing up rolling hills, along with more Spike Balls and a Giant Spiked Ball. A spot that infinitely spawns Spike Balls is found as well. The midway point is found as well, followed by rolling hills over pits of lava. A Red Ring is found, along with Goombas and Hefty Goombas on rolling hills. A Super Star is in a Brick Block. Two Warp Pipes that spawn Goombas are also found. More Spike Balls are found, along with a Giant Spiked Ball. A Warp Pipe takes the player to the flagpole.
Directly after the second Star Coin, there is an area with several spinning wheels and Spike Balls. At the end of it, turning left reveals a hidden area that leads to a green Warp Pipe. This Pipe leads to an area with more, faster spinning blocks that can only be traversed by jumping. Once at the end, the player must avoid the Goombas and jump up to the Pipe which leads to the secret flagpole.