| Date: | 2021-12-12 |
| Time: | 0600 A |
| Geyser: | Castle |
| Webcam: | Yes |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2021-12-12 21:02:52 |
| Time Updated: | 2021-12-12 21:03:00 |
| Time Uploaded: | 2021-12-12 21:03:00 |
| Entrant: | SantaFe108 |
| Observer: | |
| Submitted to: | GeyserTimes for Android |
| Comments: | Billowing steam when observed at around 0730. |