Montreal River Provincial Park is a 43.7 hectare nature reserve adjacent to Highway 17 between Sault Ste. Marie and Montreal River Harbour. Ontario Parks lists the park as established in 1968 and says it is accessible by water only.
The reserve is notable for ancient coastlines formed over a long time. The present Lake Superior coast has wave-washed outcrops of granite and diabase, while inland a steep bluff and sand deposits formed about 6,000 years ago during the Lake Nipissing stage of the Great Lakes.
Montreal River is a specialized page for visitors researching ancient shorelines, raised cobble bars, and Lake Superior coastal geology. Above the bluff, Ontario Parks describes an impressive sequence of cobble beaches or offshore bars that can be traced inland to another ancient shoreline.
The official page notes that scientists believe these unusual cobble and boulder bars may be unique in the Great Lakes. The reserve's most significant biotic community is on raised cobble bars, where mats of lichen and bearberry plus groves of pine and birch appear as open barrens.
The protection warning is explicit: the lichen barrens are easily trampled and eroded, so visitors should avoid walking on them. There are no visitor facilities, unauthorized collection is prohibited, and research requires an approved application.
Plan around water-access logistics, ancient shoreline study, cobble bar observation from durable areas, lichen barren awareness, photography, and careful Lake Superior nature reserve research.
Confirm water access, maps, no-facility expectations, lichen barren protection, collection prohibitions, research application requirements, weather, Lake Superior conditions, alerts, and park rules through Ontario Parks.
Non-operating park in Ontario Parks locator.
