the impossible poem

Start your search for a structure of salmon swine,
In pewter and bulk, beside deluge of elevated ale.
Look up at the peaks, you’ve found your sign;
It’ll come in handy when choosing your trail.

After one beer, only two options from here.
Your quest for the green, begins with a choice that is keen.
Take the right one, and you’ll almost be done.
Make sure when you veer, the sun sets not in your rear.

In between the fives, infinity is seen.
Below iron you go; on your right comes a distraction.
Just stay along the alloy, with a smile and satisfaction.
Now time to put in between the peaks, if you know what I mean.

Two choices before you, and the longer is fate.
You’ll be able to claim it, as long as you’re not late.
And if you’ve chosen wisely, you have arrived.
But a final choice must be made; from this poem derived.