Crystal Lake Access provides entry to a recreation area at 5,600 feet elevation in the San Gabriel Mountains, approximately 26 miles north of Azusa via Highway 39.

The area offers camping (first-come, first-served basis), a cafe, visitor center, and 16 maintained hiking trails, though motorized boats are not permitted on the lake and swimming has been closed due to water quality concerns.

Access is via a paved road from the fee station on Crystal Lake Road.