Hidden in Shades Mills Conservation Area. Accessible from the trails in the Conservation Area only (take a hike, get outside, it is fun). I always like hiking this park, close to Cambridge but feels far away! I especially love to walk along Mill Creek upstream of the reservoir. This Geocache is on the far side of the stream, you must follow the Toyota Way Trail to the bridge to cross the stream. It is a beautiful walk along the creek that I enjoy each summer. Once across the creek follow the dark blue arrow signs that will take you 2.5 KM looped hike through this forest ending by coming back over this bridge and takes the same trail back to your car as you came in on. This cache is at one of the far points along the trail, just before you truly turn back towards the bridge. When I saw this hiding spot I thought to myself "Was this intentional? Intended for a geocache hide? Nothings there...I can't resist putting one there." The only thing I did to this hiding spot was add the cache container!
Follow the dark blue arrows like this one. 
Follow the dark blue arrows!
From the GRCA website: "Shade's Mills has been called the best-kept secret in Cambridge. Favourite activities in this day-use area include swimming, sport fishing and canoeing. The conservation area has 12 km of hiking trails through a mature hardwood forest that winds along Mill Creek. There is good fishing for northern pike, perch, largemouth and smallmouth bass in the 32-hectare (80 acre) reservoir behind Shade's Mills dam. It is open for cross country skiing, snowshoeing and ice fishing during the winter."
Regular entrance fees apply (or check your local library for a pass you can borrow). There are now automated gates present. If you do not have a seasons pass you will need a credit card for the automated gate, otherwise you may not get in unless there is someone on the gatehouse....and that is rare, usually only staffed on busy summer weekends (10 to 4 or something). There are also limits on number of visitors at a time so park may not admit if it is at capacity. Please check website to plan appropriately. Season passes are available see the GRCA website for details and current entrance rates and payment methods. https://www.grandriver.ca/en/grand-river-parks.aspx Park closes at dusk.
Congrats Apollo (and Me) for the first to find!