 There is also a secret underground fountain which flows under the walls of the town to a water spring situated outside.From an archaeological point of view, the coins found at Sucidava show an uninterrupted series from Aurelian (270-275) to Theodosius II (408-450).The archaeological evidence show that in AD 443 or 447 the city was sacked by the Huns, and was restored under Justin I 518-527 or Justinian I 527-565.