| Clue | Source | Date |
|---|---|---|
| Kentucky national park | Thomas Joseph | 31 Mar 2026 |
| Kentucky national park | Newsday | 18 Sep 2025 |
| Major attraction | Newsday | 22 Aug 2024 |
| Kentucky national park | Newsday | 24 Apr 2019 |
| Underground Kentucky attraction | ||
| Kentucky attraction | ||
| Kentucky national park | ||
| Subterranean system in Kentucky | ||
| Kentucky tourist spot | ||
| Kentucky tourist spot | ||
| Extended vacation spot? | ||
| Kentucky landmark | ||
| Central Kentucky tourist attraction | ||
| Kentucky national park | ||
| National Park | ||
| Kentucky attraction | ||
| Kentucky sight. | ||
| National Park in Kentucky. |