Possible Clues:

• Home for 95 Down
• High-rise accommodation for the workers(3.4)
• Mound near or forming insect nest
• Home to a queen
• Everyone to keep awfully thin? There's much work to be done here
• Colony entrance
• The last in a series of disasters that's left by building workers
• Large insect nest
• Mound of insects
• The pile some workers make