| Date: | 1969-06-28 |
| Time: | 0000 A |
| Geyser: | Giantess |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 12h |
| Standardized Duration: | |
| Time Entered: | 2021-10-26 12:17:40 |
| Time Uploaded: | 2021-10-26 12:17:40 |
| Entrant: | mhreed |
| Observer: | Marler (1969) report |
| Submitted to: | Geysertimes.org |
| Comments: | Steam phase eruption that "started during the pre-dawn hours." Marler states that no eruptions occurred in May. "The June 28 eruption did not last for more than 12 hours." |