Ring Hill Airport is a privately owned, public use airport in Penobscot County, Maine, United States. It is located one nautical mile (2 km) west of the central business district of Carmel, Maine.FacilitiesRing Hill Airport covers an area of 8 acres (3 ha) at an elevation of 340 feet (104 m) above mean sea level. It has one runway designated 16/34 with a turf surface measuring 1,100 by 60 feet (335 x 18 m).