"Ireland’s longest-ever underwater horizontal directional drills"
More importantly it is in Cork. The second best place after Kerry.
https://www.thecork.ie/2020/03/20/video-a-1km-tunnel-drilled-under-cork-harbour-is-coming-into-use-irishwater/
#Eire #Ireland
A tunnel between Ireland and England via the Isle of Man?
http://www.iomtoday.co.im/article.cfm?id=53017&headline=A%20tunnel%20between%20Ireland%20and%20England%20via%20the%20Isle%20of%20Man?
...might make it real one day.
"The UK really could become a United Kingdom, according to top engineers who propose linking Britain and Northern Ireland with a high-speed rail tunnel...