Flower 4 (50)

On the left side of the room, jump around the downward-pointing spike arrow to reveal a hidden winged cloud.

Shoot the winged cloud to make a red switch appear.

Clear the dirt below the switch so it falls to the area below.

Hit the switch to raise a block on the right ledge, revealing a Chomp Rock.

Stand on the Chomp Rock to move it away from the wall, then push it to the left and down to the area below.

Push the Chomp Rock up the hills to the right, collecting coins and defeating spiky enemies.

When you reach the second group of coins, jump to find a red coin (13).

Look at the ceiling for a line of coins; shoot an egg upward into that opening to receive another red coin (14).

At the far right end, jump up ledges occupied by spiky enemies. Shoot eggs to knock enemies off platforms you can't safely jump onto.

Once at the top, jump into the bubble to morph into a Mole Tank.

As the Mole Tank, climb up the right wall and dig through the narrow passage to reach the fourth Flower.