These pics are of the Sycamore trees in the day use area near the Sacramento River.
There are several miles of trail in the Rec Area. One with a view of Mt Shasta on a clear day! (If you need internet there's a McDonalds near the highway with great wifi in the parking lot :).
If all that wasn't enough there is a amazing old Diversion Dam on the river next to the campground. When it was in service it was not so nice as 8 humongous pumps ran 24/7 through the summer to divert water from the Sacramento River into the irrigation canal system. Just last summer, 2011, the pumps were silent and the gates opened forever when a new, and very much better for salmon run, diversion system was put into service. The woman who operates the Visitor Center was the Information Officer for the construction of the new system and was happy to tell me all about it!