| Date: | 2007-11-25 |
| Time: | 0151 ns |
| Geyser: | Giant |
| Webcam: | Yes |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2013-01-19 01:03:16 |
| Time Uploaded: | 2014-09-23 20:46:48 |
| Entrant: | Tara |
| Observer: | Pat Snyder and Tara Cross |
| Submitted to: | Geysertimes.org |
| Comments: | Pat Snyder and Tara Cross webcam observation. Eruption occurred on a marathon recovery. A smaller steam cloud went up just before the larger Giant steam cloud so it is very likely that Mastiff erupted. |