That’s a great video. I was at a site in Indonesia where a huge boulder (20-foot diameter or so) had come to rest near the road.
A bunch of guys drilled holes in it manually (hit the drill bit rod with a hammer, rotate the drill bit, hit again, and repeat 1000 times. Once they had a bunch of holes drilled they were going to put clay inside the holes which would expand and crack the boulder into smaller pieces.
I’m guessing using explosives would be too dangerous with the road and buildings nearby.