| Clue | Source | Date |
|---|---|---|
| Fortified, Brummie turned up and performed aircraft manoeuvre | The Guardian Cryptic | 21 Dec 2022 |
| Protected with dirt mounds | Universal | 11 Jul 2017 |
| Protected with dirt mounds | ||
| Protected from floods, in a way | USA Today | 20 Dec 2015 |
| Protected from floods, in a way | ||
| Having flood protection | ||
| Having flood protection | ||
| Having flood protection |