Portland Brownstone Quarries
Portland Brownstone Quarries, Industrial heritage site in Portland, Connecticut, United States.
The quarries extend across multiple excavation sites along the Connecticut River, featuring deep cuts into red-brown sedimentary rock formations.
Workers extracted over ten million cubic yards of brownstone between the late 17th century and 1938, when floods permanently submerged the quarry operations.
The extracted stone shaped the architectural identity of numerous East Coast cities, providing materials for buildings in New York, Boston, and Philadelphia.
Visitors can now participate in activities at Brownstone Exploration & Discovery Park, including scuba diving, rock climbing, and water sports.
The quarry walls contain preserved dinosaur footprints from prehistoric times, embedded within the sedimentary rock layers.
Location: Connecticut
GPS coordinates: 41.57556,-72.64333
Latest update: May 11, 2025 03:58
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