Speaking of the discolored river, many people think there is nothing magical, then you are absolutely small to see the world is really wonderful, three clear rivers in the forest gathered, surprised to happen the second violent discoloration, into the jungle flowing turquoise river, this is a not-so-known world-class wonder, I'll explain to you scientifically, this is a chemical reaction of aluminum silicates in the hot spring river. Costa Rica North America.