Hendy Woods State Park

Gorgeous park and campground tucked back in the Anderson Valley. You might drive past and never know it's there, but you'd be missing out on a kid-friendly campground and park with lots of stumps and logs to play in, a great swimming hole, and the lore of Petrov Zailenko, the Hendy Hermit, which you can learn about while exploring the remnants of his "hermit huts" he built and lived in once upon a time. HMU if you want my recs for the best campsites there ;)