Originally posted by :HIT: Rheves:

... but this base was started with an abandoned stone tower at the center of it.

I don't have stone tech yet so I haven't been able to repair any of the pieces, maybe that means it's still seen as 'owned' by the graydwarves and that's why they're attacking so frequently?

That's not a thing.

They are attracted to the sounds you make while building. That's all. Advice provided from others is spot on to reduce spawning critters nearby.