A (hopefully) fun game for children of all ages using much of the Wherigo functionality. The cartridge you need can be downloaded from here:
Be sure you have the most recent cartridge before you go out. This was updated on 17 February 2015.
Allow yourself a couple of hours to do this one; it's about a mile's walk on easy terrain... there is a slight rise in a couple of places, and some of the terrain is off-road. Before you start be sure the GPS is switched on in the software you are using for the Wherigo. Just because it is switched on in your GPS unit or on your phone doesn't always mean it is switched on in the software