The first transatlantic communications cable, traversing the ocean floor from Valentia Island, County Kerry, to Newfoundland, Canada, 165 years ago was an 8 year endeavor that helped lay the foundation of the modern technology industry and explains the fragility of undersea cables today.

Cast:Jessie Buckley,

Genre:Documentary, History,

country:Germany, France, Ireland, United Kingdom,

Production:RTÉ, BBC Northern Ireland, Tyrone Productions,