It seems that Ogham has made a comeback with it recently showing up in a Coventry Garden, and also on Eurovision entrant Bambie Thug in Sweden. 

But what exactly is Ogham, and why is it being used again?  

Joining Seán to explain is Professor David Stifter, Professor for Old and Middle Irish in Maynooth and currently working on the Digitisation of Ogham project ‘Ogham in 3D’.  

Image: Florian Thiery