Look for the pieces of the pillar
The rest of the story seems to be written on the pillar. Go there and take a close look at it.
|41000||103||Sub||ROKAS_36_1_SQ_060||기둥 조각 찾기|
|NPC||Canyon Area Device 2|
It seems that the pieces would fit well. Try putting them in. But, if you give up on a quest, the piece will disappear. When you go to the pillars when the pieces disappear, you will be able to obtain the pieces.