I have managed to trigger a rockfall at Sleeping Saints. I threw a grenade at the platform you cannot reach and this caused a whole heap of rocks to come down and block the road. What is this for? Could this be used to block the enemy during a mission?
http://i.imgur.com/8jgqeRH.jpg
Interesting.
The Sleeping Saints mission involves another Amita versus Sabal choice. If you have been following Amita's leadership, blocking the entry road is part of your defense against enemy forces. You made a good call by creating the rockslide by means of something explosive.
The large gate blocking the road into Sleeping Saints is right below as you threw the grenade......which brings up another choice earlier in this mission. To enter, you could blow up the gate (enemy runs to attack you)......drive a big vehicle through the gate (enemy runs to attack you)......or walk around to the left of the gate, where you get to practice your grappling skills, as you move forward about 100 meters to a quieter entry point. This quieter entry point can also be reached by grappling from directly below that point, avoiding the road entirely.
You found a neat feature of this game.
It is part of a mission, Amita tells you to save the statues, and than tells you to block the path so Pagans forces can't blow them up, and so she doesn't waste fighters protecting it.
Although, during that mission when you are supposed to blow it up, enemy reinforcements are heading up the mountain so you can crush them if you time it right. It's kinda funny though the way it falls, looks nothing how it lands. Totally different rocks than what fell xD