Placerita Canyon State Park is located along Placerita Creek in the southeastern Santa Clarita Valley, just outside the city limits of Santa Clarita but within its sphere of influence. It lies between the Santa Clarita neighborhoods of Newhall and Sand Canyon.
The park, under the name Placerita Canyon Natural Area, is currently managed by the Los Angeles County Department of Parks and Recreation. The Placerita Canyon Nature Center is the park's visitor center and museum. The park also contains the Walker Cabin (a restored and furnished 1920s cabin of the Walker family), and hiking and nature trails.
The park is also notable for a seepage of 'white' oil - unknown anywhere else in the world. This late 19th century discovery of oil surprised the prospectors because it is naturally filtered so that it is not black but transparent. A small pool of it continues to be active by the trailside leading up from the Nature Center to the Walker Ranch.