Today I went to the Hwy. 71 Equestrian Trailhead, and discovered a trail and a pond that are not shown on the official map. Just after your turn in, there is a trail that goes off to the right, and it leads down into a small canyon with some pine trees, a small pond, and some picnic tables.
I also hiked the Whitetail trail, which leads past another small pond and the "challenge course".
I didn't see another person the entire time I was on these trails!