They saw how the bugs had integrated broken walls and collapsed ceilings as foundations for their hive.
Old equipment was buried under the nest material that the bugs were amassing all over the place. Some old warning signs were still visible through holes in the covering or part where the bugs didn't use the nesting material on.
Despite how much the bugs had changed the building, the clones could still see what it used to look like. The old security doors were still there, though they were rusty and stuck open. The bugs had used their nest material to attach these doors to the walls.
These small and big things suggested the facility was designed to sustain wars, or at least deal with high-powered stuff, thaids and ancient animals included. Based on the information they had about Silver Line Corporation, whatever was contained here must have been some form of proto-thaid.
