Any Idea's

Any thoughts on what these are?

 

Well ! They look like holes in the LR with feather dusters inside! Try taking better photo!

 

That's the best pics I can get. This rock is actually hollow. It is like a dome. I first thought it was feather dusters but there is never any feathers sticking out. The tube is darker at the bottom and almost white to cream at the end. There are probably about twenty of them but they never change the way they look and they are only in the hollow rock.

 

here is a pic of the outside of the rock and like I said it is hollow and they are only in side the rock.