| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | find underground | North African countries | Digging to find water sources such as wells or cisterns is common practice. | 1 |
| 2 | tunnel | North African countries | Often seen as infrastructure for water management, like qanats in Iran, or as pathways for ancient dwellings. | 1 |
| 3 | underground area | North Africa | Underground areas such as basements are less common due to the prevalence of flat-roofed buildings and concerns about water infiltration. | 1 |
| 4 | underground tunnels | North African countries | Often associated with historical sites and ancient civilizations, like the Egyptian pyramids and catacombs | 1 |