▁United ▁States , ▁along ▁the ▁Pot om ac ▁River . ▁It ▁is ▁located ▁in ▁the ▁southern ▁part ▁of ▁the ▁Pot om ac ▁census - design ated ▁place ▁and ▁western ▁part ▁of ▁the ▁Beth es da ▁postal ▁area . ▁▁ ▁Card ero ck ▁is ▁well ▁known ▁for ▁Card ero ck ▁Division ▁of ▁the ▁Naval ▁Sur face ▁War fare ▁Center ▁and ▁rock ▁clim bing ▁at ▁Card ero ck ▁Rec re ation ▁Area , ▁part ▁of ▁Ch es ape ake ▁and ▁Ohio ▁Canal ▁National ▁Historical ▁Park . ▁ ▁Card ero ck ▁also ▁includes ▁a ▁local ▁school ▁( Card ero ck ▁Spr ings ▁Element ary ), ▁Card ero ck ▁Spr ings ▁Sw im ▁and ▁Tennis ▁Club , ▁and ▁Cong r essional ▁Country ▁Club . ▁ ▁Despite ▁its ▁proxim ity ▁to ▁the ▁Capital ▁B elt way , ▁Card ero ck ▁remains ▁only ▁moder ately ▁developed ▁and ▁traffic ▁con g ested . ▁This ▁is ▁due ▁in ▁part ▁to ▁the ▁prominent ▁presence ▁of ▁Rock ▁Run , ▁the ▁Naval ▁Sur face ▁War fare ▁Center , ▁and ▁Cong r essional ▁Country ▁Club . ▁In ▁addition , ▁almost ▁no ▁roads ▁running ▁through ▁Card ero ck ▁have ▁direct ▁access ▁to ▁the ▁B elt way . ▁The ▁only ▁exceptions ▁are ▁River ▁Road ▁on ▁the ▁north ▁end ▁of ▁the ▁neighborhood ▁and ▁Clara ▁Bart on ▁Park way ▁on ▁the ▁south ▁end . ▁ ▁References ▁ ▁External ▁links ▁ ▁U . S . ▁Naval ▁Sur face ▁War fare ▁Center , ▁Card ero ck ▁Fac ility ▁Location ▁ ▁Card ero ck ▁Division ▁West ▁Beth es da , ▁MD ▁