Complex sentence: As a circular highway, M-185 has no specific termini; the generally accepted starting poing is at the mile 0 wooden marker placed in front of the Mackinac Island State Park Visitor Center, originally a U.S. Coast Guard station, operated by the MISPC.
Split into simpler sentences: As a circular highway, M-185 has no specific termini. The generally accepted starting poing is at the mile 0 wooden marker placed in front of the Mackinac Island State Park Visitor Center, originally a U.S. Coast Guard station, operated by the MISPC.