In 1963, a tractor which was plowing the land in the neighborhood of Zemun Polje, in the vicinity of Školsko Dobro's central building began digging up on the surface the old coins, head of a sculpture, pottery pieces and numerous other objects. The National Museum in Zemun was notified and archaeologists examined the site. It was concluded that it was a Roman fort on the former Sirmium-Singidunum road. The previously unknown settlement was squarely shaped with the sides of and, at the time of discovery, was the largest known "outer suburb" of Singidunum.