What are these - Concrete mites?
Discussion
My business has just moved into a new industrial unit and there are hundreds of these burrow holes all over the walls, all at various stages of burrow ranging from tiny to £2 coin size.
It looks like something has been burrowing out rather than in, occasionally there is a spider web like substance inside it when you break the top layer off.
Pictures below. Anyone know what theses are? Is the building away to fall down around me while I write this?;)
It looks like something has been burrowing out rather than in, occasionally there is a spider web like substance inside it when you break the top layer off.
Pictures below. Anyone know what theses are? Is the building away to fall down around me while I write this?;)
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