The final location is not in Cherry Orchard Park. With regard to a description I don't want to give away too much, suffice to say that Lessing is more...
You should only attempt retrieval if entirely confident in your capabilities. Equally, you may not find this is one for the very young. A torch might be helpful. There's one of those single use cameras in the container. Why not take a selfie at GZ? Please remember to switch the flash button off afterwards otherwise the flash won't work for the next finder. Any photos taken will be assumed to provide permission to upload to the site once the camera's full.
Good luck!
NB For those of you who can't be bothered faffing about with folding scraps of paper the co-ordinates are to be found on the 'spoiler' photograph...