One of the most popular parks in San Diego is Torrey Pines State Reserve. The park is home to the rarest pine tree in North America, the Torrey Pine; and also has a fantastic beach that stretches from La Jolla to the boundary of Del Mar. The reserve portion of the park also features a number of short hiking trails that travel through some of the park’s pine groves, and down to the beach. While all of these things and more make Torrey Pines State Reserve a great park and place to visit, the park is actually much larger than most visitors realize. As a matter of fact, the park encompasses the Reserve, the beach (Torrey Pines State Beach), the Los Penasquitos Lagoon, and the Torrey Pines Extension. Out of these four components, the most unknown area to most visitors and hikers is the Extension.