Solving the Riddle
The primary source of information regarding the case is a vague 24-line poem that was written into his self-published autobiography called "The Thrill of the Chase." You can find his memoir on e-bay, in book stores, and for free online as a PDF. However, if you're looking for the poem, all you have to do is go to his Instagram account: @forrest.fenn (it's not HIS account per se, but it is representative of his ethics and personality).
Alright, Here's the Poem
If you don't want to put the time into finding the poem, that's fine. We did the hard work for you. Here is the poem that Forrest Fenn claims will lead you to his infamous treasure box:
As I have gone alone in there
And with my treasures bold,
I can keep my secret where,
And hint of riches new and old.
Begin it where warm waters halt
And take it in the canyon down,
Not far, but too far to walk.
Put in below the home of Brown.
From there it’s no place for the meek,
The end is ever drawing nigh;
There’ll be no paddle up your creek,
Just heavy loads and water high.
If you’ve been wise and found the blaze,
Look quickly down, your quest to cease,
But tarry scant with marvel gaze,
Just take the chest and go in peace.
So why is it that I must go
And leave my trove for all to seek?
The answers I already know,
I’ve done it tired, and now I’m weak.
So hear me all and listen good,
Your effort will be worth the cold.
If you are brave and in the wood
I give you title to the gold.