This Exploration will not be very easy.

You must only attempt when the ground is dry.

You must be wearing the proper footwear.

You must be confident in your ability to climb and descend steep vertical terrain.

This Exploration shall be conducted at your own risk - please do seek the answer from elsewhere if you doubt your ability to complete this step.

You will need to climb above the waterfall.

Once you have passed the top of the visible rock face, you will find a small crater to your right.

Hidden beneath the leaves, open the mailbox.