Thats cool stuff, I have ridden both motos and MTB up there Kennedy Meadows and Keyesville area for years. Were is the Bear Creek trail??
You can catch Bear Creek at either Quaking Aspen Campground near Camp Nelson or a little further south off of highway 107 (on Forest Route 21S78). Contact these guys if you want them to shuttle you: Sequoia Mountain Adventures, Camp Nelson, CA. They're good folks. But keep in mind that, even with the shuttle, it still requires about 5 miles of climbing at around 7-8.5K feet before you get to the DH. It's a really, really fun trail though. Flowy, technical and steep (I think it drops ~4K feet in ~5 miles).
Haw - You will be riding through some good sized trees but there are no giant Sequoias on Cannell. Cannell is a great ride. I would say Bear Creek is a lot more technical and the climb is stiffer.
motoguru200 - This area is a bit North of Kennedy meadows and on the West side of the Kern river. It is in the national monument so no moto traffic is allowed on the trails. This is the main reason why the Summit trail almost disappeared. Before Clinton created the monument it was moto legal and in great shape.
you can think of Nelson and freeman going east and west. Summit goes north and south. Summit is the trail that heads north and south from the top of nelson trail. if you climb south on summit for about 4 miles bear creek will be on your right and head down to camp nelson. When riding summit on the north side we usually climb the road then ride down the trail back to quaking aspen.