Megiddo was a site of great importance in the ancient world. It guarded the western branch of a narrow pass and trade route connecting Egypt and Assyria. Because of its strategic location, Megiddo was the site of several historical battles. The site was inhabited from approximately 7000 BC to 586 BCE though the first significant remains date to the Chalcolithic period (4500–3500 BCE). Megiddo's Early Bronze Age I (3500–3100 BCE) temple has been described by its excavators as "the most monumental single edifice so far uncovered in the EB I Levant and ranks among the largest structures of its time in the Near East."The first wall was constructed in the Early Bronze Age II or III period.