This is the bonus cache to a fun, kid-oriented adventure lab.
To claim this cache you must first complete
Playtime @ Peacehaven Adventure Lab
The Adventure Lab itself is a fun and easy walk through Peacehaven Park, has 5 fun locations and I reckon half an hour will suffice although you will probably want to spend longer here as it is gorgeous. I highly recommend bringing your kids on this adventure.
Upon completion of the Adventure Lab, you will receive the final coordinates to this Mystery Cache.
I hope you have some fun and I really hope to see some photos in your logs!
Please note: The Adventure Lab locations are all wheelchair accessible. The cache itself is at ground level.