The gap between the ecobabbular subtitles and the brutal ripping apart of mountains by vast machines of great power is comic, for those with a sense of irony.Many memories. When I was a child my father built roads with this technique in the Alps in Italy. I have spent my life repairing the landslides caused by this construction technique, building walls, reinforced earth, gabions and drainage where they had dug with this military technique.Awesome. I love the civilization that men like James Watt and other Europeans built.