| Date: | 2015-05-10 |
| Time: | 1342 |
| Geyser: | Grotto |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2015-05-10 13:47:20 |
| Time Updated: | 2015-05-10 13:49:09 |
| Time Uploaded: | 2016-08-05 12:27:13 |
| Entrant: | bhoppe |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | Preceded by Central Vent Delay at 1230. |