...adth and fifty in length. The sides of this valley are even more precipitous than the great eastern and western slopes of the Cumberland, which have just been described. To reach Chattanooga from McMinnville , or north of the Tennessee, it is necessary to turn the head of this valley by Pikeville and pass down the Valley of the Tennessee, or to cross it by Dunlap or Thurman. That part of the Cumberlan...