how do you find the mask that will allow you to enter the stone tower?

i didn't know that you needed a mask to get through stone temple. i know how to help kafie
get his mask back from sakons lair though. if you figure out how to get the animals
thought mask or somethinglike that tell me please.. i would appreciate it alot...

...you need Epona. Stone tower is the last place before you fight the moon so make sure
you've done the other temples. If all else fails listen to what tatl has to say.... she is
annoying but can help you.