{"nrhp_refnum":"10000990","name":"Sunday Rock","other_names":[],"category":"object","location":{"address":"NY 56","address_restricted":false,"city":"South Colton","county":"St. Lawrence County","state":"NY","lat":44.511749380000026,"lon":-74.89375598899994,"geom_source":"nps_gis"},"listed_date":"2010-12-07","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Conservation"],"significance_levels":["local"],"summary":{"what_it_is":"A 64,000-pound, 11-foot tall glacial erratic boulder on the south side of NY 56 just west of South Colton, Town of Colton, St. Lawrence County, New York, flanked by two concrete monuments with plaques in a .34-acre park.","why_significant":"The nomination argues it is significant under Criterion A in Conservation, for local efforts in 1925 and 1965 that saved it from destruction during highway projects. It is also significant in Social History as a landmark and folklore symbol marking a traveler's passage from \"the woods to the world.\"","narrative":"Sunday Rock is a massive glacial boulder weighing 64,000 pounds and standing 11 feet tall beside NY 56, just outside South Colton in St. Lawrence County. Deposited by a receding glacier, it served Native Americans as a travelers' landmark and later became a symbolic boundary between settled farmland and the Adirondack wilderness. Local lore, tied especially to lumberjacks and river drivers, held that there was \"no Sunday\" beyond the rock, and the name was well established by the 1860s. Highway construction threatened the boulder twice. In 1925 public outcry stopped plans to dynamite it, and it was moved 12 feet to the roadside. In 1965 a widening project again threatened it, and it was moved across the road onto donated town land. Two concrete monuments with plaques mark these moves. The boulder is listed for its role in local preservation efforts and its place in regional folklore and identity.","period_of_significance":"1925-1965","architect_builder":null,"architectural_style":null,"criteria":["A"],"status_note":"Sits on a grassy island in a small roadside park with picnic tables, benches and a parking area; it has been moved twice, remaining within 12 feet of its original location.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:48.495974-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/10000990.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/10000990/f2cb404fbb-800.webp","url_1600":"https://nationalhistoricalregister.com/media/10000990/f2cb404fbb-1600.webp","licence":"CC BY-SA 3.0","author":"Chann94501","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Sunday_Rock.jpg\" rel=\"noopener\">Chann94501</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Sunday_Rock.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75321931","wikipedia":"https://en.wikipedia.org/wiki/Sunday_Rock","wikidata":"https://www.wikidata.org/wiki/Q7639543"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/st-lawrence-county/sunday-rock-10000990/"}