Found! Red Dead Redemption Avatar Award

This is almost like real content

So while in game I rode past an area full of destroyed cannons. I dismounted my horse and wandered around.

Inside a ruined shack I found and opened a chest. Lo and behold, "Avatar Award Unlocked."

Turns out find that chest unlocks an award for your Xbox Live avatar. A Red Dead Redemption t-shirt to be exact.

I took a photo of my in game map showing you exactly where the chest is located. It is in an area called "Riley's Charge" and the ruined shack is right next to a cliff.

It is possible I unlocked the award for opening a certain number of chests, but it seemed coincidental. I won't know for sure until one of you tries to unlock the award. Let me know.