In the forgotten place between the walking trails and the mountain biking trails, there exists a great pile of gravel. Why is it there? How did it get there? Was it dropped by glaciers long, long ago? Was it trapped durign the great gravel migration of the 1800s? Or an artifact of the highway expansion project? Who knows!
As you get to the area, keep your eyes peeled - a small twisty path will lead you right to the cache, saving you from bushwhacking from the pile itself.