Hoffman’s Black Mountain Aerodrome (2M7) is a public-use airport serving Cheboygan, Michigan, at 677 feet above sea level, with CTAF 122.8. Its runways: 15/33 (2,800 × 90 ft, turf).
This diagram plots every runway from the FAA’s surveyed threshold coordinates, so it sits at true heading and true length — a gift for the pilots, students, instructors and families of 2M7.