User blog comment:Kogath/Monster Hunter Generations Discussion/@comment-4481348-20160808180014/@comment-26421638-20160808191021

1) Yes, they are in the supply box (Of course only the High Rank One, they are not avabile in Low Rank quest since you cannot get on top of him in the LowRank Quest)

2) Sometimes when Nakarkos is in the 2nd phase and Falls, some red triangles appears on the top of the big skull over its head, you can walk on it and attack the weakspot on its back/mine stuff/place anti-dragon bombs