Old Newgate Prison
Case File Overview
Located in East Granby, Connecticut, Old Newgate Prison is a harrowing 18th-century penal site built directly atop America's first chartered copper mine. Established in 1773, it served as Connecticut's primary colonial jail and later as a brutal Revolutionary War prisoner-of-war camp where Tory Loyalists were housed in damp, pitch-black subterranean caverns. Renowned as one of the most oppressive penal facilities in American history, its crumbling stone ruins and underground mine shafts are active hotspots for ghostly sightings, phantom screams, and sudden drops in temperature.
Historical Background
Copper was first discovered on Talcott Mountain in 1705, and in 1707 the Simsbury Copper Mine became the first chartered copper mine in the American colonies. Miners dug vertical shafts and horizontal tunnels deep into the basalt ledge. However, high extraction costs and legal disputes led the colony of Connecticut to purchase the property in 1773 to convert the abandoned copper mine into the colony's first state prison, named after London's infamous Newgate Prison.
Inmates were housed inside the pitch-black, unheated copper mine caverns up to 50 feet below ground. Access was restricted to a single vertical shaft with a ladder. The conditions were notoriously horrific: water constantly dripped from rock ceilings, humidity was extreme, and prisoners slept on mud or rotting straw surrounded by vermin. During the American Revolutionary War (1775–1783), the prison was expanded to hold Loyalists, British soldiers, and dangerous felons. Riotous escape attempts were frequent; in 1781, prisoners overwhelmed the guards, resulting in bloodshed and mass escapes.
Following the war, Connecticut built surface guardhouses, workshops, and brick perimeter walls, forcing inmates to labor at blacksmithing and nail-making. However, public outrage over the inhumane underground conditions grew, and in 1827 the facility was permanently closed when inmates were transferred to Wethersfield State Prison. The site was designated a National Historic Landmark in 1972 and is preserved today as an archaeological state museum.
Legends & Curses
The primary legend of Old Newgate Prison surrounds the vengeful spirits of Revolutionary War Loyalist prisoners who died in the cold underground caverns. According to local folklore, prisoners who succumbed to pneumonia, gangrene, severe hypothermia, or brutal guard beatings were buried in unmarked, shallow graves just outside the stone perimeter walls. Their unrested souls are said to haunt the subterranean tunnels, forever trapped in the dark mines where they endured unimaginable suffering and despair, occasionally crying out to passing visitors.
Another famous legend involves the tragic story of a desperate prisoner who attempted to escape through a narrow ventilation shaft. Local lore relates that the inmate became wedged tightly inside the vertical stone flue halfway up to freedom. Unable to move forward or backward, his muffled cries went unheard by guards on duty above, and he slowly suffocated in total darkness. Visitors walking near the ruins of the furnace building report hearing phantom scratching sounds and panicked gasping emerging from the stone chimneys.
Additionally, stories abound regarding the 'Solitary Cell' known as the Dungeon, an isolated rocky nook where rebellious inmates were chained to iron rings embedded directly into the damp stone walls for weeks at a time. Legends claim that entering this chamber induces extreme nausea, phantom touches, and terrifying visions of disembodied faces staring out from the rocky fissures.
Reported Phenomena
Visitors, museum staff, state park rangers, and paranormal investigators routinely document intense supernatural activity above and below ground at Old Newgate Prison. Inside the underground copper mine, tourists often experience sudden, localized drops in temperature that plummet over 20 degrees Fahrenheit, accompanied by the distinct sound of disembodied boots shuffling across damp gravel when no one else is nearby.
Audio recordings captured in the mine's deepest tunnels have produced chilling electronic voice phenomena (EVP), including groans of agony, clanking iron chains, and distant male voices calling for help. On the surface grounds, visitors walking among the red-brick guardhouse ruins and stone cellblock walls have reported seeing shadow figures dressed in 18th-century colonial rags darting between the stone arches.
Staff opening the facility in the morning frequently find heavy wooden doors unlatched, lantern lights flickering unexpectedly, and footsteps echoing inside empty buildings. Paranormal teams equipped with thermal imaging cameras have filmed distinct human-shaped heat anomalies descending the historic entrance ladder into the mine shaft.
Architecture & Layout
Old Newgate Prison combines 18th-century industrial mining shafts with early American penal architecture. The site covers approximately five acres enclosed by an imposing brownstone perimeter wall built in 1790, featuring crenellated corner guard towers and a central iron gate. On the surface stand the stabilized brick ruins of the 1814 Guardhouse, the multi-story Chapel, the Cookhouse, and the Treadmill workshop.
Below ground lies a vast network of hand-chiselled copper mining tunnels and natural rock caverns extending up to 50 feet beneath the surface. The subterranean complex includes drainage adits, ventilation shafts, the 'Viaduct' passageway, and the main living cavern where prisoners were quartered. The damp stone walls retain original iron rings and wooden shoring timbers from the colonial period.
Visitor Information & Access Rules
Old Newgate Prison & Copper Mine is located at 115 New-Gate Road in East Granby, Connecticut. Operated by the Connecticut State Historic Preservation Office, the site is open seasonally to the public from May through October, Thursday through Monday, from 10:00 AM to 4:30 PM. Admission tickets cover entry to the surface ruins, museum exhibits, and self-guided underground mine walkthroughs.
Visitors entering the underground copper mine are advised to wear sturdy walking shoes and bring a light jacket or sweater, as the subterranean caverns remain at a constant 45°F (7°C) year-round with damp, uneven footing. The surface grounds offer picnic areas and panoramic views of the Farmington Valley. Special evening tours, flashlight investigations, and historical reenactments are hosted during October.
Why It Has Its Reputation
Old Newgate Prison's reputation as one of Connecticut's most terrifying haunted locations stems from its grim legacy as America's first subterranean prison, where human beings were subjected to extreme isolation, cold, and filth in pitch-black mine shafts, as well as the physical preservation of authentic 18th-century stone ruins and persistent, documented paranormal encounters reported by subterranean visitors and museum staff.
Frequently Asked Questions
Why was Old Newgate Prison built inside a copper mine?
Connecticut colonial authorities purchased the abandoned Simsbury copper mine in 1773 to create a naturally secure prison, believing the deep underground caverns would prevent escape.
How cold is it inside the underground copper mine?
The underground mine stays at a constant temperature of approximately 45°F (7°C) year-round, requiring visitors to wear warm clothing even during hot summer months.
Can you go inside the mine tunnels today?
Yes. General admission tickets include access to walk through the illuminated underground mine shafts and historic cavern quarters.
What kind of prisoners were held at Old Newgate during the Revolutionary War?
During the Revolution, the prison held British prisoners of war, Tory Loyalists accused of treason, privateers, and convicted criminals.
Is Old Newgate Prison suitable for young children?
Yes, daytime visits are educational and family-friendly. However, children should be comfortable with dark, damp, enclosed spaces before descending into the mine.