El Manatí
El Manatí is an archaeological site located approximately 60 km south of Coatzacoalcos, in the municipality of Hidalgotitlán 27 kilometers southeast of Minatitlán in the Mexican state of Veracruz. El Manatí was the site of a sacred Olmec sacrificial bog from roughly 1600 BCE until 1200 BCE. It is likely that this site, discovered in 1987, was used for ritual ceremonies which included offerings of wooden sculptures, rubber balls, ceremonial axes, and other items, including the bones of infants – all found in an excellent state of preservation in the muck.