| Event type: | Group meeting |
| Date: | 6th October 2026 |
| Time: | 3:00 pm - 4:30 pm |
| Group: | Earth Sciences and Geology |
| Venue: | Westerleigh Village Hall |
| Organiser: | |
| Cost: | £2 |
This talk by Chris Grref will explain the answer and also what they are made of, come from and why they have always been of interest throughout history.