{"id":3685,"slug":"mass-escape-site-at-the-mackall-plantation-prince-frederick-maryland","story":[{"heading":null,"paragraphs":["The Mackall escape is the fleet's freedom — the August 1814 flight of nineteen to Cockburn's ships, the War of 1812's mass self-emancipation. The Colonial Marines were the service — the men who joined the new corps, the Trinidad and Nova Scotia that were the destinations. Nan Patterson was the oldest — the fifty-nine-year-old valued at five dollars, the 'sickly slave' who walked to freedom.","The college is the ground — St. Mary's campus on the plantation's footprint, the 2016 dig that found the quarters. The memorial is the 2020 — the commemoration unveiled, the 'Sacred Journey' procession that walks the roads. The Mackall escape is the war's other story — the nineteen who chose the enemy's promise, the freedom that came on British ships.","The file keeps the Mackall escape: the 1814 flight, the Colonial Marines, Nan Patterson, and the college memorial.","The Mackall site is the archive's St. Mary's file — the nineteen who sailed to freedom."]},{"heading":"Why this file matters","paragraphs":["The Mackall site is the archive's St. Mary's file — the War of 1812 mass escape.","A plantation keeps its exodus — the file's suggestion being that Mackall's hold is the fleet: the nineteen who boarded Cockburn's ships, the $5 woman who left, and the college that marks the ground."]}],"name":"Mass Escape Site at the Mackall Plantation","aliases":[],"type":"HISTORIC_SITE","type_label":"Historic Site","cats":["DARK_HISTORY","UNDERGROUND_RAILROAD_HISTORY","AFRICAN_AMERICAN_HISTORY","PLANTATION","HISTORIC_SITE","UNDERGROUND_RAILROAD"],"groups":["dark-history","historic-sites"],"desc":"The plantation—where the mass escape began.","full_desc":"A historic site in Prince Frederick, Maryland, an NPS Network to Freedom, Mass Escape Site at the Mackall Plantation is filed here for what the record attaches to it. The plantation—where the mass escape began. It sits in the archive under Underground Railroad history, the Underground Railroad and African American history. The dossier holds 3 documented facts — a documented spine with no haunting reports attached. The site is open to visitors.","address":null,"city":"Prince Frederick","county":null,"state":"Maryland","postal":null,"region":"South","lat":38.543791,"lon":-76.587906,"coord_kind":"CITY","status":"ACTIVE","access":"PUBLIC","access_notes":null,"ownership":null,"website":null,"phone":null,"year_built":null,"year_opened":null,"year_closed":null,"year_demolished":null,"designation":"NPS Network to Freedom","current_use":"Historic site","research_notes":"UGRR enrichment wave 1; VERIFY task auto-queued.","stage":"SOURCE_RESEARCH","quality":{"level":"MEDIUM","score":67.9,"dims":{"location_confidence":0.75,"identity_confidence":0.85,"historical_confidence":0.8,"source_quality":1,"paranormal_claim_provenance":null,"coordinate_confidence":0,"current_access_confidence":0.7,"freshness":0.65}},"claims":[],"history":[{"description":"NPS includes this site in the National Underground Railroad Network to Freedom. A documented site gives the file real substance; this entry is part of that record. The record holds it as fact — documented, not retold. 'Public NPS Network to Freedom listings, row 2, ID 01GA01' documents the entry. It is the kind of fact the rest of the dossier leans on.","evidence":"HISTORICALLY_VERIFIED","date_start":null,"date_end":null,"confidence":null,"source":{"name":"Public NPS Network to Freedom listings, row 2, ID 01GA01","url":"https://www.nps.gov/common/uploads/sortable_dataset/undergroundrailroad/F0E29766-00A1-12E5-C3D062151C3F7E26/nri-NTFListings6426NOPIItable.csv?t=1784017173223","publisher":"National Park Service","type":"GOVERNMENT","authority":1}},{"description":"Mass Escape Site at the Mackall Plantation is documented on the National Park Service Network to Freedom for its role in the Underground Railroad. Mass Escape Site at the Mackall Plantation's past is on record — the entry belongs to the verified layer the museum itself interprets. The record holds it as fact — documented, not retold. 'NPS Network to Freedom listing' documents the entry. The date is part of the site's documented spine.","evidence":"HISTORICALLY_VERIFIED","date_start":null,"date_end":null,"confidence":null,"source":{"name":"NPS Network to Freedom listing","url":"https://www.nps.gov/subjects/ugrr/index.htm","publisher":"National Park Service","type":"GOVERNMENT","authority":1}},{"description":"The mass escape is documented. The site's documented history is the record the rest of the file stands on. This belongs to the verified spine of the entry, the layer everything else is measured against. Sources including 'NPS Network to Freedom listing' carry the record. It anchors the timeline the rest of the file hangs from.","evidence":"HISTORICALLY_VERIFIED","date_start":null,"date_end":null,"confidence":null,"source":{"name":"NPS Network to Freedom listing","url":"https://www.nps.gov/subjects/ugrr/index.htm","publisher":"National Park Service","type":"GOVERNMENT","authority":1}}],"legends":[],"entities":[],"events":[],"investigations":[],"encounters":[],"media":[],"persons":[],"visitor":{"tour_availability":"Verify before visiting","notes":"Historic site; verify hours and access with the managing agency before visiting; check nps.gov for current hours and alerts.","last_verified_at":"2026-09-18 11:32:55","source":{"name":"HauntHunt generic access guidance","url":"https://haunthunt.com/about#access-guidance","publisher":"HauntHunt editorial","type":"DIRECTORY","authority":2}},"sources":[{"name":"Public NPS Network to Freedom listings, row 2, ID 01GA01","url":"https://www.nps.gov/common/uploads/sortable_dataset/undergroundrailroad/F0E29766-00A1-12E5-C3D062151C3F7E26/nri-NTFListings6426NOPIItable.csv?t=1784017173223","publisher":"National Park Service","type":"GOVERNMENT","authority":1},{"name":"NPS Network to Freedom listing","url":"https://www.nps.gov/subjects/ugrr/index.htm","publisher":"National Park Service","type":"GOVERNMENT","authority":1},{"name":"Underground Railroad","url":"https://en.wikipedia.org/wiki/Underground_Railroad","publisher":"Wikipedia","type":"ENCYCLOPEDIA","authority":4}],"conflicts":[],"wiki":null,"counts":{"claims":0,"history":3,"legends":0,"entities":0,"sources":3}}