Another great piece of work. I was just thinking of the Mourne Mountains after your last video. Quite ominous feeling to this one, I liked it.
Never been up here before but I will definitely take the trip up to try and peer into that plug hole. I didn't know it was owned by NI water. Interesting footage of the engineering that went into it.
There are a few itineraries on the Ancient East
here I think you would enjoy if you are ever exploring the South East.