 Parallels have been drawn between the Norse settlement of Dublin and that of Waterford, which also appears to have been established at the confluence of a major river and a minor tributary.To date, no archaeological remains of any "longphort" or "wintersetl" have been unearthed; nevertheless, the possibility that there was no actual encampment in this early period can be discounted.A wealth of contemporary documentary evidence serves to confirm that throughout the second half of the 9th century Viking Dublin was a successful and thriving settlement from which numerous raids were launched throughout the country.