like at the volcano, it will be blocked by a lava flow, so you will have to shoot the rock in order for your friends to cross over.
(it; will be blocked; by a lava flow; L:at the volcano) (you; to shoot; the rock; in order) (your friends; to cross; over)
it you your friends
will be blocked to shoot to cross
by a lava flow L:at the volcano
the rock in order
over