Tucked into the remote woods of Piscataquis County, Katahdin Iron Works is a 23-acre state park built around one of Maine’s most fascinating industrial ruins. The centerpiece is a massive stone blast furnace dating to the mid-1800s, when this isolated site produced iron from local ore deposits. The charcoal kiln and furnace stack still stand among the birches and spruce, offering a striking contrast between human ambition and the forest that has quietly reclaimed everything around it.

But most visitors come here for what lies beyond the gate. Katahdin Iron Works serves as the primary access point to the Gulf Hagas gorge — often called the “Grand Canyon of Maine” — where the Pleasant River drops through a series of slate-walled chasms and waterfalls over a three-mile stretch. The rim trail and canyon floor routes offer some of the most dramatic hiking in New England, with several named falls including Screw Auger, Buttermilk, and Billings Falls.

Beyond Gulf Hagas, the surrounding KI Jo-Mary Multiple Use Forest provides miles of logging roads for mountain biking, fishing access on remote ponds, and wildlife watching in true backcountry solitude. Moose sightings are common, especially at dawn and dusk near boggy areas.

Visit between late June and early October for the best trail conditions. Fall foliage here peaks in late September and is spectacular against the dark gorge walls. Expect gravel roads, limited cell service, and the kind of quiet that only deep Maine woods can deliver.

Explore Nearby

• Katahdin Woods and Waters Scenic Byway — Scenic Byway in Maine
• Katahdin Woods and Waters National Monument Dark Sky Park — Dark Sky Site in Colorado
• Dice Head Light — Lighthouse in Maine
• Salt Missions Trail Byway — Scenic Byway in New Mexico
• Grindel Point Light — Lighthouse in Maine