Fifty-six miles northwest of downtown Chicago lies the 12,000 year old Volo Bog State Natural Area, home to the only open-water quaking bog in Illinois. Volo Bog – THE BOG – was dedicated as the 25th Illinois Nature Preserve in June, 1970. As the southern-most open water quaking bog in North America to exhibit all stages of bog succession, it was designate a National Natural Landmark in 1974.
A floating mat of sphagnum moss, cattails and sedges surrounds an open pool of water in the center of the bog. Currently, the bog itself is unaccessible due to the boardwalk closure. It will remain closed until funding be can secured for replacement. The first section into the marsh moat remains open. The other trails (5.5 miles worth) are also open. https://www2.illinois.gov/dnr/Parks/Pages/VoloBog.aspx
Volo Hiking Map can be found here: https://www2.illinois.gov/dnr/parks/documents/volobogsitemap.pdf
I had to do some research because I didn’t know the significance of what an “Open Water, Quacking Bog” meant. The bog part means that the water is supported by a high concentration of peat. There is a floating mat of peat made from dying vegetation on the water. The fact that the mat of peat moves with the water is what gives it the ‘Quacking’ distinction. And, most bogs of its kind are covered up with plants and forest. The Volo Bog still has open water in the center. This allows a visitor to walk through the cascade of changing plant life as they approach the center of the bog.
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