end0skeletal:Caño Cristales is a Colombian river located in the Serrania de la Macarena province o
end0skeletal: Caño Cristales is a Colombian river located in the Serrania de la Macarena province of Meta. Noted for its striking colors, it is commonly called the Rainbow River. The river is crystal clear because it flows over bare rock on which the colorful plants grow. (x x x x ) -- source link