The first inhabitants arrived in the year 1840, settled in the site that today is called Calamar (initially denominated Gamarra), in an extensive plain between the swamp of the Blacks and the Grande river of the Magdalena.
The initial settlers arrived in 1840, inhabiting the area now known as Calamar (originally named Gamarra), on a vast plain between the Black Swamp and the Grande River of the Magdalena.