| Date: | 2009-09-26 |
| Time: | 1853 |
| Geyser: | Black Diamond |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2020-05-03 08:08:35 |
| Time Uploaded: | 2020-05-03 08:08:36 |
| Entrant: | mhreed |
| Observer: | Powell article in Transactions XII pg. 77 |
| Submitted to: | |
| Comments: | Visitor report. Ralph Taylor wrote to Powell that what they saw was "near Wall Pool but not Wall Pool itself” and that the eruption "was black and as tall as the trees." |