Reservations for the four campgrounds must be made through Reserve California, the California State Park reservation system. Setting up hammocks on any of the trees is not allowed. The use of hammocks and ropes will damage the trees' bark. Most of the the state park campgrounds and campsites were constructed before the 1940s. Be aware they can not accomodate todays large RVs and trailers. To protect your vehicle and the parks' natural resources, RV and trailer size restrictions will be enforced.