Mario Zone Area 4
From the Super Mario Wiki
The level starts off with a few steps leading to a satellite under a ? Block containing a Mushroom or Fire Flower. This is followed by another satellite and a Turtle Cannon. After another satellite, some Spike Traps will be laid across the floor. This will then lead to a small section with Turtle Cannons. Past this is a set of stairs with a Goomba on top. Under these stairs is a small path leading to bonus room containing many coins and satellites. If the player were to go up the stairs, they'd find a few more Goombas followed by a group of four ? Blocks. The second-to-right ? Block contains a Mushroom or Fire Flower. After this is a Bomubomu with a Turtle Cannon, which is then followed by the checkpoint bell over another Bomubomu and Goomba. Past this is a platform inhabited by Wakiris, followed by a ? Block containing a Mushroom or Fire Flower along with another platform with Wakiris. Dangerously placed under the second platform is a Moneybag. After this are a few Wakiris, satellites and Goombas follower by the ending Warp Pipe leading to the Three Little Pigs boss-fight.