Buckel's Bog was a 160-acre, shallow periglacial lake or a glade that occupied the headwater region of the North Branch of the Casselman River in

Garrett County, Maryland Garrett County () is the westernmost county of the U.S. state of Maryland, completely within the Appalachian Mountains. As of the 2020 United States census, the population was 28,806, making it the third-least populous county in Maryland. I ...

, during the late

Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...

epoch. It is the remnant of the only known natural lake in Maryland. The eastern side of the remaining evidence of Buckel's Bog is presently traversed by the Casselman River as its waters flow northward into

Pennsylvania Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...

. In the nineteenth century, the fledgling United States began its westward expansion; the

National Road The National Road (also known as the Cumberland Road) was the first major improved highway in the United States built by the federal government. Built between 1811 and 1837, the road connected the Potomac and Ohio Rivers and was a main tran ...

was one artery proposed and constructed to facilitate this westward flow. The proposed road would cross the Casselman River just south of Buckel's Bog, so the (at that time) country's largest stone-arch bridge was constructed (1813–14) over the river. The 80–foot–span Casselman Bridge, first used by wheeled vehicles in 1815, remained in use until 1933. Although now replaced by a nearby steel bridge, the stone bridge now serves as the centerpiece of Maryland's Casselman River Bridge State Park.Casselman River Bridge State Park
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References

{{DEFAULTSORT:Buckel's Bog Bogs of Maryland Landforms of Garrett County, Maryland