| Date: | 2007-10-16 |
| Time: | 1322 |
| Geyser: | Mastiff |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2013-01-19 01:33:01 |
| Time Uploaded: | 2013-01-19 01:33:01 |
| Entrant: | Tara |
| Observer: | Bill Warnock |
| Submitted to: | Geysertimes.org |
| Comments: | Mastiff height estimated at 50+ feet. |