Bracketed by the municipalities of Longue-Pointe-de-Mingan and Aguanish, the park reserve encompasses over a thousand islands and islets. It is recognized across Canada as having the largest grouping of erosion monoliths. Its ecological environments are home to some very unique and rare plants that manage to grow in the most unlikely places. Furthermore, approximately 200 bird species use the park reserve, such as the Atlantic puffin! As for the two lighthouse stations, they bear witness to the life of their keepers and tell a maritime story specific to the region.