
Hamburg and the high ridges of Calhoun Co dominate this river-valley landscape, where the Mississippi River weaves through a complex network of backwaters and islands. The eastern shore is defined by steep bluffs and narrow hollows like Michael Hollow and DeGerlia Hollow, which give way to the prominent Dividing Ridge. Small rural settlements and scattered family cemeteries such as Gresham Cem and Oak Grove Cem reflect the agrarian character of the Illinois uplands during the late 20th century.
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