I think I have a problem with an island- Bug

I understand in question that to get the soul of the argon island I need to hit some ice pillars and do the exact damage to them … but what do I do if there is not a single pillar? Yes, where the pillars should be, there are sculptures already made or I don’t know if it’s a matter of misunderstanding the mechanics? What do I need to do, could you help me?