{"nrhp_refnum":"71000202","name":"Sardine Valley Archeological District","other_names":[],"category":"district","location":{"address":null,"address_restricted":true,"city":"Truckee","county":"Sierra County","state":"CA","lat":null,"lon":null,"geom_source":null},"listed_date":"1971-05-06","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Prehistoric","Art"],"significance_levels":["state"],"summary":null,"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861961","wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/california/sierra-county/sardine-valley-archeological-district-71000202/"}