where is the second coin in super mario bros wii world 1 bowser castle

Mario must wait for Bowser to jump so he can go under Bowser and hit the switch. In the first phase of the final battle, Bowser will breathe fireballs at Mario.

Once Mario reaches Bowser, the door closes. In the corridor after going through the doors, Bowser's fireballs will come from offscreen to the right. Then, Mario enters the giant green doors leading to the final battle. On the far right of this room by the door to the final battle, there is a hidden block that contains a Mushroom or a Fire Flower that will help him in the final fight. The player needs to make sure to reach the midway point first before Mario enters the final showdown against the Koopa King. In the last room, there is a big green door leading the player to the final battle against Bowser himself. The second room has a lot of slow falling platforms and sinking lava, but the platforms fall faster than the lava. They can be stopped by an Ice Flower, while the Fire Bars that also appear need to be avoided. For the first (out of two) rooms there are a lot of Lava Bubbles, which will jump out of the lava to attack the player.

Where is the second coin in super mario bros wii world 1 bowser castle