411 REFERENCE · Wikibooks
Super Mario World/Cookie Mountain/Soda Lake
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
You have just found what is probably the hardest level in the game. It is a hidden level that you must find through the end of the Cheese Bridge level. Watch out for Torpedo Ted; watch their movement and run. They are indestructible so just finish it and you are off to Star Road.