{"nrhp_refnum":"71000133","name":"Indian Grinding Rock","other_names":["Chaw`Se"],"category":"site","location":{"address":null,"address_restricted":true,"city":"Volcano","county":"Amador County","state":"CA","lat":38.424194444,"lon":-120.814111111,"geom_source":"wikidata"},"listed_date":"1971-05-06","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Prehistoric"],"significance_levels":["state"],"summary":null,"photo":{"url_800":"https://nationalhistoricalregister.com/media/71000133/5ff109864a-800.webp","url_1600":"https://nationalhistoricalregister.com/media/71000133/5ff109864a-1600.webp","licence":"CC BY-SA 2.0","author":"artq55","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Indian_Grinding_Rock_State_Historic_Park.jpg\" rel=\"noopener\">artq55</a>, <a href=\"https://creativecommons.org/licenses/by-sa/2.0\" rel=\"license noopener\">CC BY-SA 2.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Indian_Grinding_Rock_State_Historic_Park.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123858397","wikipedia":"https://en.wikipedia.org/wiki/Indian_Grinding_Rock_State_Historic_Park","wikidata":"https://www.wikidata.org/wiki/Q6020369"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/amador-county/indian-grinding-rock-71000133/"}