The reserve was created in 1965, covering 6,423 square kilometres (2,480 sq mi) of boreal forest near the towns of Port-Cartier and Sept-Îles.

Fish include Speckled trout, Arctic char, Lake smelt, Whitefish and Atlantic salmon.

The forest contains conifers such as Picea mariana (black spruce), Picea glauca (white spruce), Abies balsamea (balsam fir) and Larix laricina (tamarack), and deciduous trees such as birch and Populus tremuloides (trembling aspen).

[4] Wildlife includes moose, black bear, boreal woodland caribou, wolf, lynx, fox, snowshoe hare, porcupine, beaver, mink, otter and marten.

[1] The reserve is open to visitors, who may fish, hunt, pick berries, or explore the area on foot or by boat.