The cache is not at the posted coordinates. Instead, a puzzle with some multi-cache elements. You will be shown the coordinates for the final treasure whilst you are visiting William Mann public fountain during the 'Raiders of the Newton Mearns' wherigo. Remember to put them in your adventurer's bag for later on. They can also be found the more traditional way too (see below)
The final cache is in a woodland strip. Waypoints are available in the wherigo cache page to help with parking and access. The paths can be muddy in places and wiggle around a bit. Probably best to wear boots unless after the driest spell.
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