This trail is successively blazed: Green with a white circle, Green with a Black circle, and Green.
If you have followed the loop after crossing the "road," the trailhead starts on the other side. My preference when the trails split is to stay left. Left where the Green/White circle trails splits and loops, left again when meeting the Green/Black circle trail, and left again when meeting the Green trail. Avoid the Green/Green triangle trail as this exits to the Gravel pit and the Soccer fields parking lot, and misses the best sections of the trail.
There are several small log crossings to navigate on this trail that add to the challenge of it.