Hartwick Pines State Park will host the annual Black Iron Days Festival on August 23 & 24; the largest annual gathering of blacksmiths in Michigan. Over 50 craftsmen and women will be on hand demonstrating their trade at the logging museum located at the park. The two-day event, taking place from 10am to 4pm each day, also will recreate the sights, sounds and scents of an historic sawmill cutting logs into boards. Watch woodworkers, weavers and wool spinners as they show how their crafts were done in the era before power tools. There are no admission fees to these programs; however a Michigan State Parks Recreation Passport is required for park entry. A $11 Recreation Passport is required for entering State Parks, Recreation Areas, State Forest Campgrounds, Non-motorized Trail Head Parking and Boat Launches. Recreation Passports can be purchased when renewing your State of Michigan license plate tabs or at state parks and recreation areas.