... Chattanooga, crossing the Tennessee above it, it was necessary, either to pass north of the Sequatchie Valley, by Pikesville or Kingston, or to cross the main Cumberland and the Sequatchie Valley by Dunlap or Thurman and Walden's Ridge, by the routes passing through these places, a distance from sixty-five to seventy miles, over a country destitute of forage, poorly supplied with water, by narrow and d...