| Date: | 2017-09-16 |
| Time: | 1549 ie |
| Geyser: | Grotto |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2017-09-16 16:23:58 |
| Time Uploaded: | 2017-09-16 16:23:58 |
| Entrant: | Polly |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | May have been start as I approached. Central Vents were on and shut off shortly after. (Sounded like a possible Rocket right after I got there but I couldn't tell due to very heavy steam. If it was, it was short lived.) |