There is water at the posted coordinates, and possibly something beneath the surface, but there's certainly no geocache there. If that's what you're looking for, there may be an ammo can in the woods waiting for you, but you have some work to do first.
My very first job was working for American Greetings, the greeting card company. You may think I did something exciting like writing messages of encouragement or sympathy, or finding funny pictures of cats, but I did nothing of the sort: I built greeting card fixtures. That's right-- the bases, supports and shelves that held the cards were my purview, rather than the cards themselves.
One thing that I found truly staggering was the amount of cardboard that went into the whole enterprise. For every pound of greetings cards, it seemed to take two tons of cardboard to transport it. My job was boxes, boxes, and more boxes. Cutting them, opening them, smashing them, baling them, and sometimes putting them back together-- I did it all!
What does that have to do with this puzzle? To be honest, not much, except that the story I mentioned involves boxes, just like the puzzle below. You'll have to use the boxes in the puzzle image to put the coordinates together. How? Well, that's for you to discover.
A few words of guidance:
1) No rotations, please.
2) When you're finished, the square of side length six should touch that of side length four.
3) When you're finished, the square of side length four should touch that of side length three.
4) When you're finished, the square of side length three should touch nothing of area thirty-six.
And that's all you need to know to solve the puzzle! Good luck, and have fun!
You can validate your puzzle solution with certitude.
FTF prizes are a 1943 steel penny and a buffalo nickel!