It is not known exactly where or when the formal magnetic compass originated. However, what little, unclear evidence has been found indicates the compass was refined in Italy circa 1200AD. Italy is known for its grand maritime achievements that made them a navigational superpower.
It is believed Flavio Gioia first invented the refined compass, and a monument has been erected in Almafi Italy to honor his invention. The magnetic compass was probably developed by combining the wind rose and the lodestone. From this device it is supposed the compass rose evolved. A wind rose was glued to the top of a lodestone and placed in a covered container of water. Later, oils were used instead of water to stabilize the compass disk from erratic movement. Then it was found you could magnetize needles and glue them to the bottom of the disk. These needles had to be re-magnetized periodically to maintain a sufficient level of magnetism.
This is a simple letterbox - a container with a stamp in it. To find it, approach a fence on the pond-side of the trail. Look near the middle fence post at the posted coordinates.
Please leave the stamp in the cache. Should you wish to stamp something you own, please bring your own ink.