| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | tunnel construction | Denmark | Tunnel construction is less common due to the relatively flat landscape and the extensive use of bridges for water crossings. | 1 |
| 2 | tunnel construction | Norway | Tunnel construction is necessary to create efficient transportation routes and connect communities in rugged and mountainous regions. | 1 |
| 3 | tunnel construction | Norway | Tunnel construction is crucial for creating efficient transportation networks in mountainous and rugged terrains. | 1 |
| 4 | tunnels | Norway | Tunnels are important for providing passage through mountainous terrain and are an integral part of the transportation network. | 1 |
| 5 | underground tunnels | Norway | Utilized for mining and resource extraction, such as the historic iron-ore mines | 1 |