{"nrhp_refnum":"73001431","name":"Spruce Run Earthworks","other_names":[],"category":"structure","location":{"address":null,"address_restricted":true,"city":"Galena","county":"Delaware County","state":"OH","lat":40.1778,"lon":-82.8643,"geom_source":"wikidata"},"listed_date":"1973-07-16","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Prehistoric"],"significance_levels":["local"],"summary":null,"photo":{"url_800":"https://nationalhistoricalregister.com/media/73001431/c3f7cb9f3a-800.webp","url_1600":"https://nationalhistoricalregister.com/media/73001431/c3f7cb9f3a-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Woods_with_the_Spruce_Run_Earthworks.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Woods_with_the_Spruce_Run_Earthworks.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71988024","wikipedia":"https://en.wikipedia.org/wiki/Spruce_Run_Earthworks","wikidata":"https://www.wikidata.org/wiki/Q7581431"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/delaware-county/spruce-run-earthworks-73001431/"}