Just before leaving, a bus-load of high-school students from Las Vegas arrives, which is an odd disruption of the tranquility of this place. (I've been the only camper here the past two nights.)
I leave the campground at 4300 feet at around 10h45. The steep hill was tough coming up a couple of days ago, and I recall a ranger telling me that he saw me riding very slowly up the hill (at about 3 mph probably). So it's of course a lot of fun to go back down now.
I reach 32 mph on the steepest part; gravity just pulls me down Essex Road.