Two of the best Native American archaeological sites are at the preserve. Pleito is one of the best painted rock-art sites in the world. Rock art of the Chumash people is among the most elaborate rock art. Cache Cave has a substantial collection of artifacts. Neither site can be visited. Pleito is overly fragile. Cache Cave has complex passages. Instead virtual reality is used to show the sites. VR headsets are available for people visiting the preserve during special events.
