| Was busy exploding tunnels |
The Telegraph Toughie |
08 May 2025 |
| Underpasses (7) |
|
|
| U-boat has means to make tunnels underground |
|
|
| Metros |
|
|
| Underground railroads |
|
|
| Semi-subtle directions lead to tunnels (7) |
|
|
| US Underground trains (7) |
|
|
| Was busy developing systems underground |
The Times Cryptic |
24 Jun 2022 |
| Transit systems |
Thomas Joseph |
14 Jun 2021 |
| Pedestrian tunnels |
The Times Concise |
21 May 2019 |
| Big Apple conveyances |
Universal |
15 Dec 2015 |
| Big Apple conveyances |
|
|
| Token transports |
|
|
| Token transports |
|
|
| Underground trains |
|
|
| Metro systems |
|
|
| Tubes |
|
|