| Date: | 2017-06-12 |
| Time: | 1838 |
| Geyser: | UNNG-TGG-1 |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | ~0.5m |
| Standardized Duration: | ~0.5m |
| Time Entered: | 2017-06-12 20:58:18 |
| Time Updated: | 2017-06-12 19:00:31 |
| Time Uploaded: | 2019-05-13 21:37:39 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | Eruption from late 1838 to near mid-1839. |