One of the many things on my to do list is to learn how to fly a drone, given the enormous possibilities it offers in the arena of IH recording.
In advance of that happening (no scheduled date unfortunately), I link to this Youtube channel, by the name of DroneHawk, (I don’t know who the owner/content creator of the site is) which has excellent footage of both recent engineering works, such as the Dunkettle interchange/Foynes railway relaying and footage of historic railway alignments.