The Oak Ridges Moraine is a prominent geological landform in southern Ontario, offering diverse outdoor recreation opportunities across forests, wetlands, and rolling hills.
The Oak Ridges Moraine is an expansive 1,900 square kilometer geological ridge that stretches approximately 160 kilometers across southern Ontario, Canada, from the Niagara Escarpment in the west to the Trent River in the east. Formed during the last glaciation about 12,000 years ago, the moraine functions as a vital groundwater recharge area, feeding numerous rivers, streams, and wetlands in the region. Its unique topography creates complex ecosystems that support a diverse variety of plant and animal species, including rare and endangered flora and fauna. The area is characterized by a mosaic of forests, meadows, kettle lakes, and wetlands. Historically, it has been inhabited by Indigenous peoples who relied on its resources for thousands of years, and today it remains an important cultural and natural heritage site. Recreational opportunities along the moraine include hiking, mountain biking, birdwatching, fishing, and nature photography. Several regional and provincial parks protect portions of the landscape, such as Kilcona Park, the Oak Ridges Corridor, and the Glen Major Forest. Many trails traverse the moraine, offering scenic views of rolling hills and glacial landforms. Its proximity to the Greater Toronto Area makes it a popular destination for outdoor enthusiasts seeking accessible natural spaces. Conservation efforts are ongoing to protect this unique landform amid urban development pressures, emphasizing sustainable land use and habitat preservation.
Hockley Valley Provincial Nature Reserve – scenic escarpment and forested trails
Cold Creek Conservation Area – rare Carolinian forest ecosystem and waterfalls
Kettle Lakes – glacially-formed kettle lakes ideal for fishing and paddling
The Ganaraska Forest – extensive network of multi-use trails for biking and hiking
The moraine’s underground aquifers replenish regional watersheds, serving as a critical water source for millions.
A large contiguous forest offering extensive trails for hiking, cycling, and cross-country skiing within the moraine region.
Distinctive glacial landforms including rolling hills and kettle lakes formed by retreating ice sheets.