What the world needs is a few more people with eye strain and so I've created this cache to help you along that path.
The trails are well marked with posts at most, if not all trail junctions. Maps can be download one at http://www.merrimackoutdoors.org/files/3814/0547/2214/Brochure_03_2014.pdf.
Hopefully, without to much hard work you'll be able to solve the mystery of the pictures (shown below) and be on your way to find this cache out on a trail used mainly by mountain bikers.
So, here is eye test number 1

And here is eye test number 2

Hope the eye strain isn't all that bad, but then, as I said, I'm here to help. For those of you on cell phones, the images are also in the image gallery.
When, and if, you pass the eye test, you can check your answers for this puzzle on GeoChecker.com.