Mary Lake (Ontario)

The town of Port Sydney is located at its southern end.

[1] Both ends of the lake are connected with the North Muskoka River.

Muskoka Bible Centre is religious conference centre located on north end of the lake.

Opened as a Baptist retreat in 1931 it replaced a youth camp at Fisher's Glen on Lake Erie in 1930.

Cottages along lake limit public access to a few points: The islands are believed to be former volcanic pipes from an ancient mountain.