Nothing but sweet downhill single track through the woods. It still has great views though. A great early morning ride to start your day. At the bottom of moonstone there are some sweet switchback banked turns. If you bike up to the trailhead from town it is a long climb. There isn't much of parking at the trailhead except a dirt turnaroud across the street. Twenty to thirty minute ride.
From Breckinridge take Boreas pass road up the mountain till you get to baldy road and turn left. Once on Baldy road turn left on sally barber for couple hundred yards and you will see a pole with small signs on it at the Barney Ford trail head. Once on the trail make sure you follow the arrow that points to the right. Take this trail down till you will cross a road and it will turn into the moonstone trail.
http://www.singletracks.com/item.php?c=1&i=1778