| Date: | 1994-09-04 |
| Time: | 1255 |
| Geyser: | Grotto |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | ~9h |
| Standardized Duration: | ~ |
| Time Entered: | 2019-07-24 09:20:21 |
| Time Uploaded: | 2019-07-24 09:20:22 |
| Entrant: | JarnoO |
| Observer: | OFVCL-EV |
| Submitted to: | Geysertimes.org |
| Comments: | marathon; ended ~2145 |