A focused journey to the Serranía de la Macarena in Meta, Colombia, to witness Caño Cristales. Accessible primarily from July to November, this trip involves navigating the Guayabero River and hiking through savanna and tropical forest to reach the riverbed. The waters run clear over ancient rocks, revealing bright red, yellow, green, and black hues produced by the endemic aquatic plant, Macarenia clavigera.