<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> Crowley's Ridge (also Crowleys Ridge) is an unusual geological formation that rises 250 to 550 feet (170 m) above the alluvial plain of the Mississippi embayment in a 150 - mile (240 km) line from southeastern Missouri to the Mississippi River near Helena, Arkansas . It is the most prominent feature in the Mississippi Alluvial Plain between Cape Girardeau, Missouri, and the Gulf of Mexico . </P> <P> This narrow rolling hill region rising above the flat plain is the sixth, and smallest, natural division of the state of Arkansas . It is protected within Ozark--St. Francis National Forest . </P>

Where is crowley's ridge located in arkansas
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