| Date: | 1997-09-30 |
| Time: | 0910 |
| Geyser: | Giant Hot Period |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 4½m |
| Time Entered: | 2020-08-29 10:34:02 |
| Time Uploaded: | 2020-08-29 10:34:06 |
| Entrant: | JarnoO |
| Observer: | OFVCL-EV |
| Submitted to: | Geysertimes.org |
| Comments: | Mastiff 4' surge |