| Clue | Source | Date |
|---|---|---|
| Cave man's hobby? | LA Times Daily | 10 Jul 2025 |
| Hobby of cave exploring (10) | ||
| Exploration and study of caves (10) | ||
| Going underground, Louis XIV saving skin, almost | ||
| Underground activity | ||
| Underground activity | New York Times | 03 Jan 2019 |
| Exploration of caves as a hobby | The Telegraph General Knowledge | 23 Aug 2015 |
| Underground hobby? | ||
| Tell about gym bumbler exploring caves (10) |