This is another option for your DH practice sesh that parallel's the Ruby Peak DH with a fast ride down from the Lime Quarry. It doesn't have all the man-made features like the Ruby Peak, but does provide a very steep ride down. It looks more to be an advanced motorcycle climb, but rides well going down too. Some parts are very steep and loose straight down the mountain, which is good for the bike handling skills. At the end you can stay right and take some ATV trails that detour around the main road to add some more fun down the mountain.
Just after the Lime Quarry and waterfall, stay left on the first side road and find the trail diving left off of that right away. There is also another very raw trail that parallels this one and is even closer to the creek and goes in an out of it a few times. It looks to be more of a motorcycle climb. It connect back to this trail near the top and near the bottom.