This park was created in 1983 to protect the banks of the fjord. It covers roughly 300 km²/116 mi² and stretches for about 100km/62mi from La Baie to Tadoussac. Popular areas within the park include Sainte-Marguerite Bay, Tadoussac Dunes and Éternité Bay. The latter is one of the prettiest coves of the fjord, dominated by the twin cliffs of Cape Trinité and Cape Éternité. An interpretation centre at the end of the Éternité River valley features interactive exhibits tracing the origins of the fjord.