/ km 2 . ▁It ▁was ▁crossed ▁from ▁east ▁to ▁west ▁by ▁the ▁V oug a ▁River . ▁ ▁Econom y ▁Ba ix o ▁V oug a ▁is ▁a ▁sub region ▁of ▁heavy ▁industry ; ▁its ▁exports ▁include ▁paper , ▁cer am ics , ▁chemical s , ▁autom ob iles , ▁and ▁food . ▁Tour ism , ▁education ▁( including ▁the ▁University ▁of ▁A ve iro ) ▁and ▁health ▁services ▁are ▁also ▁very ▁developed . ▁ ▁Municipal ities ▁The ▁municipal ities ▁( Con cel hos ) ▁of ▁Ba ix o ▁V oug a ▁(" Lower ▁V oug a " ▁river ▁valley ) ▁are : ▁Á gu eda ▁Al berg aria - a - V el ha ▁An ad ia ▁A ve iro ▁Est ar re ja ▁Í l hav o ▁ ▁M urt osa ▁O live ira ▁do ▁B air ro ▁O var ▁Sever ▁do ▁V oug a ▁V ag os ▁ ▁Note : ▁Me al h ada ▁used ▁to ▁be ▁part ▁of ▁Ba ix o ▁V oug a . ▁It ▁is ▁now ▁part ▁of ▁Ba ix o ▁Monde go ▁/ ▁Reg iao ▁de ▁Co im bra . ▁ ▁Transport ▁Several ▁motor ways , t oll ways ▁( auto - est rad as )[ A ▁ 1 ; A ▁ 2 5 ]. ▁Main ▁train ▁stations : A ve iro ( main ▁hub ), ▁O var , E sm or iz , P amp il h osa , Me al h ada , E star re ja , O . do ▁B air