I hiked the trails in
on Manitoulin Island.
This park has some of the best examples of alvar habitat, these large, exposed areas of limestone.
Some still bear the scrape marks from the glaciers.
The horizontal lines are glacial scrapes
This is a rare "puddingstone" among all the limestone
The limestone along the shore has been shaped by Lake Huron
Many fossilized corals are exposed in the limestone
Here's a large chain coral
Limestone flats = Alvar