I recently found an out-of-print book documenting local iron mines in the New York and New Jersey Highlands, and have made light plans to hike each of the trails this summer.

The nearby Green and Wawayanda iron mines in Wawayanda State Park were my first priority, even though there’s not much to see (the adits and most of the shafts have been filled in for years); I’ve hiked within 50 feet of them a dozen times and never knew they were there.