1 0 0 ▁B . C ., ▁not ably ▁W ols an - ri ▁and ▁H w ang se ong - d ong ▁( FP CP ▁ 2 0 0 5 ; ▁G NR IC H ▁ 2 0 0 3 ). ▁ ▁Econom y ▁Today ▁the ▁H ye ongs an ▁continues ▁to ▁play ▁a ▁role ▁in ▁local ▁transport , ▁as ▁it ▁has ▁for ▁thousands ▁of ▁years . ▁ ▁Although ▁very ▁little ▁boat ▁traffic ▁is ▁found ▁on ▁the ▁river , ▁the ▁river ▁valley ▁still ▁provides ▁an ▁important ▁transport ation ▁cor rid or . ▁ ▁High ways ▁connecting ▁U ls an , ▁G ye ong ju ▁and ▁P oh ang ▁follow ▁the ▁river ' s ▁course , ▁as ▁does ▁the ▁D ong ha e ▁N amb u ▁Line ▁passenger ▁railway ▁from ▁G ye ong ju ▁to ▁P oh ang . ▁ ▁The ▁spraw ling ▁industrial ▁facilities ▁of ▁P oh ang ▁Iron ▁and ▁Ste el ▁( POS CO ) ▁and ▁IN I ▁Ste el ▁are ▁located ▁in ▁P oh ang ▁just ▁south ▁of ▁the ▁mouth ▁of ▁the ▁H ye ongs an . ▁The ▁eastern ▁bank ▁of ▁the ▁river ▁in ▁the ▁sub ur bs ▁north ▁of ▁the ▁old ▁city ▁of ▁G ye ong ju ▁are ▁the ▁home ▁to ▁many ▁industrial ▁facilities . ▁ ▁Gallery ▁ ▁See ▁also ▁ ▁R ivers ▁of ▁Asia ▁R ivers ▁of ▁Korea ▁List ▁of ▁Korea - related ▁topics ▁Geography ▁of ▁South ▁Korea ▁ ▁References ▁ ▁F P CP ▁( Foundation ▁for ▁the ▁Pres ervation ▁of ▁Cultural ▁Properties ) ▁ 2 0 0