Hi Vicky,
To give you some insight this is from Priscus's journy to Attilas villiage. I've been trying to trace the steps.
Depending on where he crossed the Tiza river (in earlier text), it could refer to trenches dug by the Romans in third and fourth century. Or it could refer to small rivers if Priscus crossed at a higher point along the Tiza.
Knowing if what the possibility of the text referring to trenches or ditches would help in finding the exact city.
I hope this makes sense. If not let me know.
Gene