SEQUATCHIE RIVER. Enjoy the beauty of the Sequatchie Valley by canoe. One of only two Rift Valleys in the entire world, the other being Great Victoria Valley in Africa, the Sequatchie Valley was formed by giant shears as the plateau literally split apart, giving the valley its memorable shape. Over 125 miles long from the Tennessee River to Crossville, the Sequatchie Valley never exceeds 5 miles in width. The beautiful Sequatchie River winds southward through the valley, criss-crossed by old bridges and lined with hardwood stands. You can Canoe the Sequatachie around Dunlap, TN 37096 423-949-4400