Experienced cachers can stop reading now.
If you've found more than 20 or 30 caches, there is every chance you've encountered a fake rock. They are very effective hides in parks, where the casual passer-by won't even look at it twice.
There are essentially two types of fake rock hides. One is a (coloured / textured) lump of concrete moulded to look like a rock, with a recess on the bottom to hold the container.
The other type, this hide, is a small purchased container intended to hide your house or car key in the garden. While I've seen a number of different colours for these fake rocks, they have all been pretty much the same shape and size - it fits in the palm of your hand.
Sometimes, the cache owner will let you know that theirs is a rock hide by including the word "Rock" in either the title or the hint. It always pays to read the listing carefully.
The provided hint, if you are still having trouble (or are desperate for the First2Find) tells you exactly how the cache has been placed. So now you know what you're looking for, and where it is, go get it!
The cache is in a park through which part of the Ponds Creek system flows - consequently you should approach GZ from Alexander Street (although suggested parking is on a side street). The cache has been placed within about 20 metres of a bus stop (513 & 545) so stealth may be required at times.
As it's a micro you will need to bring your own pen / pencil - if you don't sign the log you can't claim the find (no "I forgot" or "my geodog ate it" excuses accepted). And remember to replace it the same way you found it, so the cache is still there for the next cacher. Feel free to throw a leaf on two on top for extra camouflage.
Congratulations to
bella at waggy
on the First2Find!