Aerial surveying and satellite imagery have revealed over 100 previously unknown Bronze Age settlements in Northeast Serbia’s Pannonian Plane, dating back to 1,600 BCE to 1,200 BCE. The settlements consisted of large enclosures protected by ditches and earthen ramparts, some covering over 2,400 acres and spanning 15 miles of defensive works. The enclosures were built close to major rivers and were part of a trading network for bronze. The discoveries were made by an international team of archaeologists who used satellite photos, aerial surveys, and excavations to uncover the sites. The findings shed new light on the late Bronze Age and the Balkans.