Opened in 1967, the 87.49 hectares (216.2 acres) property offers camping sites and a range of opportunities for outdoor recreation, including picnicking, swimming, canoeing, kayaking, biking, front-country hiking, boating, fishing, cross-country skiing, snowshoeing, and geocaching.

The highly eroded bedrock is covered by a thick layer of glacial till, sands and gravels deposited during the retreat of the last ice age some 15,000 years ago.

[5] The carboniferous bedrock to the north of the Mira includes numerous coal seams - evidence of the area's environment 300 million years ago.

Along the southern part of its course, glacial deposits have interrupted the flow to form a chain of small lakes which are all less than 15 metres above sea level.

Portions of the park remain relatively undisturbed and in a region with a long history of human development provide an opportunity to explore and appreciate the area's natural heritage.

[2] Due to its small size, long history of human development and use and island-like setting, Mira River Provincial Park is home to a limited number of mammals, including snowshoe hare, red squirrels, voles, moles, bats, field mice and porcupine.

Common birds which inhabit the park and surrounding woods and waters include bald eagles, loon, blue heron, Canada goose and a variety of owls, ducks and other waterfowl.

In the early 1700s, French settlers arrived and soon began clearing the land and exporting timber, particularly white pine prized for ship masts, to France.

Even today, a walk along the shore of the river will reveal hundreds of bricks that fell off the ships transporting them from the kiln to the Louisbourg construction site.

Situated on the 55 kilometre-long Mira River, and within a short drive from the greater Sydney area, the provincial park is popular for pleasure boating and other recreational activities including fishing and swimming.

The park offers public access to Mira River and provides facilities and services to better enjoy the area's recreational amenities.

The park provides an accommodation base for campers that is close to the greater Sydney area and the nearby Fortress of Louisbourg National Historic Site of Canada.