Beginning in the Late Formative period ( 300 BC -- AD 300 ) , San Estevan was a regional political center .
San Estevan is located on the New River half way between the sites of Cerros and Lamanai .
Beginning in the Late Formative period ( 300 BC -- AD 300 ) , San Estevan was a regional political San Estevan .
San Estevan is located on the New River half way between the sites of Cerros and Lamanai .