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The Illinois side includes Henry County, Mercer County, and Rock Island County. [4] In extreme northwestern Illinois the Driftless Zone, a region of unglaciated and therefore higher and more rugged topography, occupies a small part of the state. Charles Mound, located in this region, is the state's highest elevation above sea level.
The Shawnee Hills are a region within the larger Interior Low Plateaus physiographic province located in southern Illinois, southern Indiana, and western Kentucky. [1] In Illinois it rests mainly in an east–west arc roughly following the outline of the southern end of the Illinois Basin .
A landlocked country is a country that does not have any territory connected to an ocean or whose coastlines lie solely on endorheic basins.Currently, there are 44 landlocked countries, two of them doubly landlocked (Liechtenstein and Uzbekistan), and three landlocked de facto states in the world.
The country's core region is the central Congo Basin. [1] Having an average elevation of about 44 metres (144 ft), it measures roughly 800,000 square kilometres (310,000 sq mi), constituting about a third of the DRC's territory. [1] Much of the forest within the basin is swamp, and still more of it consists of a mixture of marshes and firm land ...
Charles Mound [3] is a gentle, 1,235-foot (376 m) high hill located in Scales Mound Township, Jo Daviess County, Illinois, United States.It is 2 miles (3.2 km) northeast of the small town of Scales Mound, and 11 miles (18 km) northeast of Galena.
The earliest Carboniferous rocks sit conformably on top of the youngest Devonian in Illinois; Carboniferous rocks in the state are areally extensive, regionally very well-exposed, and form a large percentage of the state's bedrock. Illinois remained marine for much of the Carboniferous, with limestones making up most of the rock deposited ...
Piney Creek Ravine State Natural Area is an Illinois state park on 198 acres (80 ha) in Jackson and Randolph Counties, Illinois, United States. One cliff face in the ravine contains several Native American petroglyphs , along with modern graffiti , which was added to the National Register of Historic Places in 2001.
Illinois' ecology is in a land area of 56,400 square miles (146,000 km 2); the state is 385 miles (620 km) long and 218 miles (351 km) wide and is located between latitude: 36.9540° to 42.4951° N, and longitude: 87.3840° to 91.4244° W, [1] with primarily a humid continental climate.