 The carriage roads are open from the end of the spring mud season, generally in late April, through the summer, autumn, and winter months, until the following spring thaw causes another closure in March to prevent damage to the gravel surface.Acadia National Park's first naturalist, Arthur Stupka, also had the distinction of being the first NPS naturalist to serve in any of the NPS's eastern United States districts.He joined the park staff in 1932, and in the capacity of park naturalist he wrote, edited and published a four-volume serial entitled "Nature Notes from Acadia" (1932–1935).