Thornhill Broome is a fantastic primitive beach campground. You will open your door and walk directly onto the sandy beach. Located in the Santa Monica Mountains, features five miles of ocean shoreline with rocky bluffs, sandy beaches, sand dunes, rugged hills and uplands, two major river canyons and wide grassy valleys dotted with sycamores, oaks and a few native walnuts. There are more than 70 miles of hiking trails. The beach also features swimming, body surfing and surf fishing. The park includes the jagged pinnacles of the Boney Mountains State Wilderness Area. There are no hook ups at this beach campground. Camping Adventures trailer models 2360, 2550, and the Toyhauler are great options for this campground. Camping Adventures is the only authorized trailer rental delivery service to this State Park campground.