It is almost 50 years since major protests took place in Dublin against plans by the City Council to build new civic offices on a Viking settlement discovered on Wood Quay.

It was big news at the time but in the end the campaign of opposition was ultimately unsuccessful and the project was completed in 1994.

Now, after just over four decades using the site as its headquarters, DCC have made an announcement that threatens to ignite some of these old tensions. 

So why was the site such a bone of contention to begin with and why does it threaten to be so again?

Tara Duggan is joined by Dr. Pat Wallace who was the Director of the archaeological excavations at Wood Quay and later of the National Museum of Ireland.