Archaeologists puzzle over layers of history in Hungary

A 3,500-year-old gravesite, a Roman military camp, and a medieval road are just three of the possibilities archaeologists are exploring at a dig near Rábapatona, Hungary.

The excavations, at the site of a planned traffic intersection, have revealed a circular trench dating to 1,500 B.C.E., a possible medieval drainage canal and the remains of what might be a Roman military camp.