sentences:  The elevation in the county ranges from just under near the confluence of the Green River and Broad River to over on Tryon Peak and Wildcat Spur, the highest peak in the county.Polk County is divided into two physiographic regions; the Blue Ridge Mountains in the western third of the county and Piedmont for the eastern two-thirds.Since it is in a transition zone between the two regions, Polk County is often referred to as being in the foothills.