Where to find Rockhopper's Key :)

This is a message from Polo Field:

Hello Penguins! Many of you probably already know where Rockhopper's Key can be found and have it. But we've been hearing some of our newer penguins were having troubles finding it while he was here...

We want to make sure that next time he visits, everyone knows where the key is and has it. So if you find a penguin that needs help finding it, don't hesitate to help! That's what community is all about right? (And we totally have the best community) Waddle on!

…Thanks Polo for giving new Players a hint of where to look for Rockhopper’s Key to unlock the Captain’s Quarter :) I hope Rockhopper and Yarr soon will be back :)

Rockhopper :)