| Date: | 2025-08-13 |
| Time: | 1226 |
| Geyser: | UNNG-GHG-18 |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | >1m |
| Standardized Duration: | >1m |
| Time Entered: | 2025-08-13 20:48:32 |
| Time Uploaded: | 2025-08-13 20:48:45 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | Eruption from late 1226 to early 1228. |