Mal'ta (sometimes spelled Malta and not to be confused with the Mediterranean island) is an Upper Paleolithic site in Siberia that has been found to include genetic evidence concerning the colonization of the Americas.he older child at Mal'ta has been direct-dated to 19,880 +/- 160 RCYBP, from well-preserved bone collagen. Isotopic analysis of the child's collagen indicate that his diet included about 25% freshwater aquatic foods, probably fish or waterfowl, and probably obtained from the nearby river.