| Date: | 1998-09-12 |
| Time: | 2213 |
| Geyser: | Grotto |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2020-11-27 13:46:37 |
| Time Uploaded: | 2020-11-27 13:46:40 |
| Entrant: | JarnoO |
| Observer: | OFVCL-EV |
| Submitted to: | Geysertimes.org |
| Comments: | marathon 1998-09-13: 0545 ie; end 1220; marathon |