Zelda help last lvl

anybody who beaten this game, I need help on finding where the key is to open the last big
door I think is where the fight Zant.

I just beat zant today so i can help you, on the room that is kind of outside the palace (next to the room with all the elevator things there is a waterfall with the black stuff fall down. you need to spin attack it to clear it and then just across to the other side. then use the clawshots to climb it. You will find the big key in a chest. O and its not the last level there is still more of the game

A lot more!

lo diz game is ez i bet it n like 4 days (school n all)
ya i dont remeber how 2 get da key sarry