▁Bra xt on ▁B rag g ▁and ▁James ▁Long street ▁ ▁used ▁Sun set ▁Rock ▁as ▁a ▁look out ▁in ▁ 1 8 6 3 ▁where ▁they ▁were ▁able ▁to ▁track ▁the ▁movement ▁of ▁the ▁Union ▁troops ▁as ▁they ▁entered ▁Look out ▁Valley . ▁It ▁is ▁claimed ▁that , ▁unknown ▁to ▁Long street , ▁the ▁Union ▁troops ▁could ▁see ▁him ▁on ▁Sun set ▁Rock ▁from ▁the ▁valley , ▁where ▁they ▁were ▁able ▁to ▁de ci pher ▁the ▁Confeder ate ▁code , ▁giving ▁them ▁the ▁ability ▁to ▁anticip ate ▁the ▁next ▁moves ▁of ▁the ▁Confeder ates . ▁This ▁resulted ▁in ▁the ▁Battle ▁of ▁W au h atch ie , ▁in ▁which ▁the ▁Confeder ate ▁army ▁attempted ▁to ▁remove ▁the ▁Union ▁forces ▁from ▁the ▁river ▁and ▁block ▁their ▁supply ▁lines . ▁ ▁The ▁attempt ▁was ▁ ▁un success ful ; ▁with ▁the ▁consequence ▁that ▁the ▁Union ▁forces ▁were ▁able ▁to ▁lay ▁sie ge ▁to ▁Ch att ano oga . ▁ ▁History ▁ ▁Native ▁Americans ▁and ▁Look out ▁Mountain ▁A ▁branch ▁of ▁Ch ero kee ▁Native ▁Americans ▁lived ▁in ▁Ch att ano oga , ▁the ▁Ch ick am aug a ▁people . ▁The ▁Ch ick am aug a ▁called ▁the ▁mountain ▁Ch at - a - nu - ga ; ▁hence ▁the ▁name ▁of ▁the ▁city . ▁ ▁Research ▁suggests ▁the ▁mountain ▁was ▁inhab ited , ▁although ▁no ▁physical ▁evidence ▁has ▁been ▁found . ▁ ▁On ▁top ▁of ▁the ▁mountain , ▁the ▁pattern ▁of ▁b ould ers ▁suggest ▁lan es ▁or ▁walls ▁were ▁once ▁there .