| Clue | Source | Date |
|---|---|---|
| Soaking spot | Wall Street Journal | 22 Mar 2025 |
| Thermal water source (3,6) | ||
| Wyoming's Old Faithful, e.g.* (3,6) | ||
| It's heated geothermally | Universal | 23 Feb 2024 |
| Spa locale | Thomas Joseph | 20 Mar 2019 |
| Steam source | New York Times | 01 May 2015 |
| Steam source | ||
| Yellowstone feature | ||
| Yellowstone feature | ||
| Spa locale | New York Times | 26 Dec 2011 |
| Spa locale | ||
| Vichy attraction | ||
| Vichy attraction |