After crossing the Colorado River, about north of the Howard-Borden county line, FM 669 continues north toward Gail, the county seat of Borden County. Near Gail, one passes two prominent erosional remnants of the Llano Estacado. To the south of Gail, one can see a conspicuous landmark known as Mushaway Peak (also known as Muchakooaga, Muchaque Peak or Cordova Peak); this small butte stands on high ground between Grape Creek and Bull Creek, two tributaries of the upper Colorado River. A much larger mesa, called Gail Mountain, stands on the western edge of Gail and provides a scenic backdrop for this small town.