At the base of this lush, 400 foot hill is Boca da Valeria. The name means Mouth of Valeria. The Valeria River (blue water) is one of 1,100 tributaries flowing into the Amazon River (brown water) as the latter travels over 4,000 miles across South America into the Atlantic Ocean. The Amazon River is the second longest in the world, only surpassed by the Nile in Egypt. Yet the water discharge by the Amazon is greater than the world’s next seven biggest rivers combined.