{"nrhp_refnum":"81000097","name":"Muir Beach Archeological Site","other_names":["4-Mrn-33"],"category":"site","location":{"address":null,"address_restricted":true,"city":"Marin City","county":"Marin County","state":"CA","lat":null,"lon":null,"geom_source":null},"listed_date":"1981-01-26","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Prehistoric"],"significance_levels":["local"],"summary":null,"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123859693","wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/california/marin-county/muir-beach-archeological-site-81000097/"}