Explore historic center of Supetar and search for clues that will lead you to hidden treasure. Note all clues that you find because you will need them all to calculate final coordinates of hidden treasure.
You need Wherigo cartridge for this cache and you can find it here. You can complete this Wherigo cartridge in about half an hour.
Note: You need to write down all clues that you find, because cartridge will not save them!