Lots of medium to large rocks, rock gardens, downhill single track to pick up speed. Occasional short climbs, but mostly downhill from Humber Park trailhead. watch out for hikers. Some water and a waterfall at the beginning.
I-215 to Hwy 74 east to Idyllwild. follow signs to Humber Park. Adventure Pass required to park. Trail Head starts at parking area.
http://www.singletracks.com/item.php?c=1&i=2877