| Opeongo Hills | |
|---|---|
 Opeongo Hills near Boulter, Ontario. | |
| Highest point | |
| Peak | Unmarked point |
| Elevation | 586 m (1,923 ft) |
| Geography | |
  Opeongo Hills The Opeongo Hills are the hilly region in the eastern portion of Southern Ontario | |
| Country | Canada |
| Province | Eastern Ontario |
| Range coordinates | 45°30′N 77°40′W / 45.500°N 77.667°W |
The Opeongo Hills (sometimes called the Opeongo Mountains or Madawaska Highlands, particularly for the easternmost hills) are a range of hills in Southern Ontario, near Algonquin Provincial Park. The hills stretch from Opeongo Lake in Algonquin Park in the west, along the Madawaska and Opeongo Rivers, towards the Opeongo Colonization Road, and extending towards the Deacon Escarpment (north of Killaloe, Ontario in Renfrew County), Bonnechere, Ontario, and Dacre in the east. To the east of the Opeongo Hills lie the Madawaska River valley, the Mississippi River Valley, and the Ottawa-Bonnechere Graben along the Ottawa River. Its tallest peak is roughly 7 km northeast of Highway 60. At roughly 586 meters, it is the tallest point in Southern Ontario. The community of Foymount (along the former Highway 512, the Opeongo Line) is one of the highest settlements in Southern Ontario.
The Opeongo Hills are a continuation of the Laurentian Highlands, which extend into Eastern Ontario, towards Gananoque, and across the Ottawa River Valley into Quebec, and the Laurentian Mountains, which continue parallel to the St. Lawrence River, north of Montreal, Trois-Rivières and Quebec City.
The geography in this area of Central Ontario is dotted with rolling hills and forests with streams, lakes, and small waterfalls, typical of a place in the Canadian Shield.
The first European explorer to visit the region is Samuel de Champlain, in 1615, while exploring the area with the Huron natives. When settlers first started arriving in the area in the late 1790s and early 19th century, land areas were given to settlers by the Canadian Land and Emigration Company for settlement and farming. The soils of the area were not perfectly suited for farming, but small-scale agriculture was able to be conducted on the land. Today, the Opeongo Hills are crossed by many provincial highways, many of which still follow the original Historic Colonization Roads.