This can be very busy in the campground area in the summer.  Better in the fall. The sites along the creek (not on the hill) are the best.  Also great shared creekside spot for bikers and hikers.There is a great swimming hole about 3/4 of a mile down the creek. Good hiking trails - one along the creek and one along the hillside that are mostly shaded and not widely used.  Also to the top of Mt. Barnabe which is a longer harder climb. The Cross Marin trail is great for biking.