CACHE IS NOT AT THE POSTED COORDINATES

Posted coords will not help you solve the puzzle.

You will need to upload the Adventure Lap app in your smartphone. 

Then you will look  for the Adventure Lab named

A walk back in time

Visit the 5 locations around the park to gather information that will lead you to the final of this bounus cache.

Final Location

Enter the five keywords in alphabetical order no spaces

You can validate your puzzle solution with certitude.