The cache is not at the posted coordinates. Solve the following puzzle to get the final coordinates.
This puzzle a cipher it uses.
A common one many have knowledge.
But symbols, rare, common not, possess;
The answer to treasure in hiding.
Enjoy the hunt for the answer.
The numbers you looking for hidden,
In puzzle in message here written.
Six numbers are derived from cipher
The final three numbers of locale
Coord’nates of north and west needed.
North forty and hundred west 'leven
Assume those are the first numbers
Followed five four five five minutes
Tada now solve last six digits
Treasure will be yours to acquire
Double use of the code secret
Needed to solve the place hidden.
The method was employed in movie
A journey to island a sequel
A cipher some broken have achieved.
The posted place treasure not present
Birds nesting there disturb not, okay!
Pond fishing and boating too, swimming?
Braver men than me have attempt
Swimming in this pond of water.
Now solving this puzzle you attempt
Cipher is known to the masses,
Double use of the code secret
Treasure will be yours to behold
Bison tube in the place hidden

You can validate your puzzle solution with certitude.