This is the fourth in a series of eight picture puzzle caches placed around the town of Ermoupoli. The given coordinates are not where you'll find the cache...no swimming required. To find the real coordinates, you'll have to solve the following puzzle:
You will find the cache at N37 26.A E24 56.B
Once you have the correct coordinates and reach the cache site, please be discreet in your search and leave the cache no less well-concealed than you found it. As it's one of those "hole in the wall" hides, you are also asked to be gentle...if a stone doesn't move with a light pull, then it's not meant to move at all.
W (a.k.a. DidianRay)
You can validate your puzzle solution with certitude.