| Date: | 2006-06-28 |
| Time: | 1356 |
| Geyser: | Giant Hot Period |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 6m44s |
| Standardized Duration: | 6m 44s |
| Time Entered: | 2013-07-14 03:29:47 |
| Time Uploaded: | 2019-05-13 21:45:29 |
| Entrant: | Tara |
| Observer: | Tara Cross |
| Submitted to: | Geysertimes.org |
| Comments: | Mastiff surged to 3 feet. |