sentences:  The project investigated and documented more than 125 looters' trenches and tunnels.The site covers an area of approximately and includes approximately 729 major structures dating from the 5th to 6th centuries AD; the densest concentration of substantial structures is clustered within the central of the site core; the tallest temple stands high.The principal architecture was erected under the supervision of the dynasty installed by Tikal and its Teotihuacan allies.