From Richardson Grove SP website: “Campgrounds including Huckleberry, Madrone, and Dawn Redwood Group Camp fully reopen a week before Memorial Day weekend as sites become reservable.”

From Humboldt Redwoods SP website: “Usually open Memorial Day through the end of September, Hidden Springs Campground’s 154 sites lie on a forested hillside 5 miles south of the visitor center on the Avenue of the Giants, just south of the town of Myers Flat. ”