Trails always closed for a few days after rainfall to let the dirt and clay dry out properly. Please don't ride muddy trails!
A forested singletrack with a lot of elevation change - you'll race up and down the steep ridge (about 30 feet high or so) at least a dozen times. The name Lung Buster is certainly apt! Some turns have berms; others are high speed flat turns so get a foot out and rail them like a flat tracker.