[3] Notable features of the park include historical and archeological locations, calving sites of boreal woodland caribou, the Kesagami River canoe route from Kesagami Lake to Hannah Bay, and typical flora and fauna of boreal forest.

Another highlight of the park is the 20,780 hectares (51,300 acres) Kesagami Lake, unique for its size in the James Bay area.

[5] Furthermore, the 4-metre-high (13 ft) peat cliffs along the shores of Kesagami Lake, which have been carved by the waves into bizarre forms of deep caverns and thick columns, have long been recognized as "exceptional".

Stunted black spruce (Picea mariana) are the dominant tree species, with sporadic balsam, fir, and larch stands.

Other tree species found are tamarack (Larix laricina), trembling aspen (Populus tremuloides), and white birch (Betula papyrifera)[3][5] Animals in the park include moose, woodland caribou, bear, wolf, bog lemmings, otters, and martens.