Following a rocky trail at Warsaw Caves Conservation Area
Two Saturdays ago, my husband and I visited a conservation area a few miles east of Peterborough, Ontario. The weather was beautiful and a number of families were out exploring the trails, this one headed for seven caves created by a series of glaciers that once covered much of Ontario with two to three kilometers of ice.
As the last of the glaciers - about 12,000 years ago - began to recede, melted water formed prehistoric Lake Algonquin (the remains of which is now Lakes Superior, Michigan, Huron, and Simcoe) and Lake Iroquois (the remains of which is now Lake Ontario). Deep meltwater flowed swiftly from Lake Algonquin to Lake Iroquois creating cavities in the area's limestone bedrock.
Where cedars grow now, water once flowed
Over thousands of years, acidic water - caused by high levels of carbon dioxide - dissolved the bedrock where it flowed through cracks that naturally form in limestone. Eventually water flowed over, through and under the bedrock.
Can you see the layers in the limestone?
The bedrock shifted as the weight of the ice above lessened and as erosion continued. Caves formed where underground river channels collapsed.
Here you can see rocks, cracks, a hole...
Wait! Do you hear something?
Weren't these spelunkers (cave explorers) kind to pose for me?
Click HERE to see tons more photos celebrating Our World.