| Date: | 2019-07-31 |
| Time: | 1951 |
| Geyser: | Marmot Cave |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | ~4m |
| Standardized Duration: | ~4m |
| Time Entered: | 2019-07-31 21:22:14 |
| Time Uploaded: | 2019-07-31 21:22:14 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | Eruption from 1951 to 1955; intermittent splashing from low pool again - water level not visible. |