Archbald Pothole State Park is a 149.16-acre Pennsylvania state park in Archbald, Lackawanna County, Pennsylvania. The focal point of the park is Archbald Pothole. The pothole is a remnant of the Wisconsin Glacial Period, 38 feet deep with a largest diameter of 42 feet by 24 feet. It has drawn tourists since just after it was discovered in 1884. Archbald Po…Archbald Pothole State Park is a 149.16-acre Pennsylvania state park in Archbald, Lackawanna County, Pennsylvania. The focal point of the park is Archbald Pothole. The pothole is a remnant of the Wisconsin Glacial Period, 38 feet deep with a largest diameter of 42 feet by 24 feet. It has drawn tourists since just after it was discovered in 1884. Archbald Pothole State Park is on U.S. Route 6 Business in the borough of Archbald.