The Puerto Hormiga archaeological site is located in the Bolivar department, Colombia, in the lower Magdalena basin near the Caribbean coast.
Its traces provide evidence of a semi-sedentary agricultural society in the making, whose members hunted and gathered shellfish.
According to other findings, such as ceramic remains and abundant stone material, the nomadic peoples were beginning to complement their activities with small-scale horticulture and agriculture.
The Puerto Hormiga ring, found in a marsh, is composed primarily of clam shells.
[1] Sherds of fiber-tempered and sand-tempered pottery, as well as stone tools, were found associated with the shell ring.