Raise the Ladder! (ハシゴを上げよう！, Hashigo o Ageyou!) is an event in Tomba! 2: The Evil Swine Return. This is the second event involving a cog.
Find the Hexagon Cog for the lever operator, so he can raise the ladder.
The Hexagon Cog can be found in one of the ice blocks in the area. When you have obtained it, head back to the man to clear the event.