| Date: | 2021-08-25 |
| Time: | 1809 |
| Geyser: | UNNG-GHG-18 |
| Webcam: | Yes |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | >59 |
| Time Entered: | 2021-08-25 18:16:37 |
| Time Updated: | 2021-08-28 19:51:22 |
| Time Uploaded: | 2021-09-02 19:08:50 |
| Entrant: | SantaFe108 |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | UNNG-GHG-18 "Marmot's Tail" N-NE of Marmot Cave and W-SW of Plate. Duration is unclear because pixelization became too great. |