Totally agree with Mr Vicente Dagnino. The Tacna name is derived from the quechua phrase " takana " or " tacana " that means " place where hit " Did Taca do derives from the verb do tac-cay which means ¿golpear.¿and do na do is an prepositiva expression of indeterminate meaning and in this case means do place where is do.????????This is due to two motivo:primero: Natives put the name to a place according to the characteristics or according to a fact that observe it.Second: The coast of Tacna, according to the map, has curvature that looks to the South. Possibly this curvature has a great Cliff which is hit by waves from the South. This fact coincides perfectly with the quechua phrase stingy do and therefore named Tacna.??