Steganos is a Greek word that means hidden or protected. Not only is the cache hidden but so are the co-ordinates.
Once you have figured out the co-ordinates it will be a simple matter of retrieving it.
Ohh... did I forget to say. The cache is actually within 459 meters of the starting co-ordinates but the chances of you locating it from that information are pretty slim.
NOTE: The cache was originally hidden in a tree which the council has since removed. The cache has now been replaced 22 steps away - find 15 degrees on your compass, and walk 22 steps from where the mark is, and look there.