Continue through the level
until you reach the area where there is door partially
covered by cloud between two Shotzos. Find a way down to
this door by going to the left and sneaking under the
clouds.
In the next room, you'll
find two Rockys and a 1-UP. Grab a 1-UP, and the stone
ability from the Rocky if wish.
Using the stone ability,
you can just drop straight down the level with ease! Watch
out though, because the bottom of the level is only
blocks! When you reach a door, don't stop - keep going!
Uncovering a few of the
blocks to the left is a hidden door! Go through to find
the switch!