I suggest you go looking for something fragile.

Quote Originally Posted by Din View Post
When you suddenly destroy the Tendrils, and you get the key, you find "Crimsrobe" running away, not ever seeing him before!
Well, that's a bug, I'm afraid! But using a secret technique to cross the broken bridge is quite permissible.

Quote Originally Posted by pkmnfrk View Post
I am wondering about the staircase, since I found my way to it, went down it, and then died in a gruesome, horrible death. Which made me lose a lot of progress
The answer is... it's a shortcut between two dungeons! But you need the Slightly Longer Hookshot to make proper use of it.