Do pillars act as walls do in respect to infestations?

[PicaMula]

I'm planning to build my throne room in a place where there are three overhead mountain tiles, if I build three pillars under those overhead mountain tiles, will they stop infestations there just as if I built three wall segments?

[Ukas]

I'd like to know this too.

[Jean]

3 walls segments never prevented infestations.

[PicaMula]

3 walls segments never prevented infestations.

They sure would Jean, the room I'm describing has only 3 overhead mountain tiles, so if I'd cover those tiles with walls, they would prevent infestations on those tiles just like if it was never mined in the first place.

[Ukas]

Indeedy. Infestations can happen in other parts of the map if there are any overhead mountain tiles uncovered with walls. Even if on the river. This might confuse players. Previously the location mattered, bug hives only spawned close to uncovered spots.

[Jean]

Sorry, I didn't realize you only had 3 tiles under a mountain roof.

[PicaMula]

Well I figured it out. Pillars do not block tiles for infestations. Got a real messy throneroom now hahaha.

[cultist]

AFAIK pillars do nothing except hold up roofs. They don't even count as occupied tiles, meaning pawns move through them at full speed.