There are several prehistoric sites in the proximate vicinity of the Los Osos Oaks State Natural Reserve, in addition to archaeological recovery within the reserve itself. A significant-sized Chumash site, Los Osos Back Bay, has been partially excavated on a stabilized sand dune slightly to the north of the reserve dating to at least as early as 1200 CE.[4]
Proposed for closure
The reserve was one of several state parks threatened with closure in 2008. After the 2009 California state special elections, in which voters turned down a package of propositions dealing with California budget crisis, Governor Arnold Schwarzenegger proposed the temporary closure (for at least 2 years) of 220 parks.[5] The closures were ultimately avoided by cutting hours and maintenance system-wide.[6]