| Date: | 2018-09-28 |
| Time: | 0734 |
| Geyser: | Giant Hot Period |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 5m40s |
| Standardized Duration: | 5m 40s |
| Time Entered: | 2018-09-28 07:51:59 |
| Time Uploaded: | 2019-05-13 21:45:47 |
| Entrant: | Graham |
| Observer: | |
| Submitted to: | GeyserTimes for Android |
| Comments: | SW Vents, Feather, F Satellite, Rust. Slight Mastiff overflow but no surging. Cave bubbled but did not erupt. |