Rainbow darter and hogsuckers swim amongst the fast creek riffles, and fourtoed salamanders burrow within the mosses of boggy wetlands. Hemlock and magnolia trees can be spotted along streams in coves and bottomlands, along with rich understories of rhododendron. Rising from the eastern corner of the watershed, Black Mountain is the highest mountain in Kentucky as well as the highest in the Cumberland basin, with a 4,145-foot summit.