Possible Clues:

• Termite mound
• Termite nest
• Insect colony's home
• A rise for the workers
• Self-built small ground-level home, not flat
• Nest piled high, left new twenty two in a mess
• The pile some workers make
• One hour in work place bustling with activity
• Tiny workers’ high-rise accommodation
• Anyone at first, latest in long sequence sick in crowded tenement