Gothic dominance collapsed when the Huns arrived and attacked the Thervingi in 376. Most of the Thervingi sought asylum in the Roman Empire, and were followed by large groups of Greuthungi and Taifali. All the same, significant groups of Goths stayed in the territories north of the Danube. For instance, Athanaric "retired with all his men to "Caucalanda""probably to the valley of the river Olt from where they "drove out the Sarmatians". A hoard of Roman coins issued under Valentinian I and Valens suggests that the gates of the amphitheatre at Ulpia Traiana were blocked around the same time. The Pietroasele Treasure which was hidden around 450 also implies the presence of a Gothic tribal or religious leader in the lands between the Carpathians and the Lower Danube. It contains a torc bearing the inscription "GUTANI O WI HAILAG", which is interpreted by Malcolm Todd as "God who protects the Goths, most holy and inviolate".