Thornhill Broome Beach

Thornhill Broome Beach is the beachfront campground at the northern end of Point Mugu State Park, formerly known as La Jolla Beach and renamed for Mary Thornhill Broome. The campground runs as a single line of roughly 70 reservable sites along the shoulder of Pacific Coast Highway, set on a narrow strip between the highway and the sand. Each site has a picnic table and a fire ring, and the campground is otherwise primitive: vault toilets only, with no water, no electricity, no showers, and no dump station. Reservations open six months in advance through ReserveCalifornia. The La Jolla Group Camp, inland of the highway, shares the Thornhill Broome check-in. The Big Sand Dune sits directly across Pacific Coast Highway from the campground, a steep coastal dune climb used widely as a fitness workout and as a sunset viewpoint.

The sand bottom and breaking waves along the open beach are a surf zone biome.

Swimming concentrates in calm conditions through the summer, and shore anglers work the sand for surfperch. The beach break holds shape across moderate swell, and surfing picks up when the surf builds. No rocky structure or kelp sits offshore along the named beach, which keeps snorkeling, scuba, and spearfishing in the surf uncommon.

Reservations are essential because of high demand. Day-use parking along the shoulder is paid per the state park schedule. Fishing and spearfishing are legal here under standard California regulations. No state marine protected area covers this section of the Point Mugu coast.