Operating. . .
| Geyser: | Grotto |
| Date/Time: | 2021-05-29 @ 0000 |
| Entrant: | JarnoO |
| Observer: | |
| Time Entered: | 2021-05-29 06:17:11 |
| Time Updated: | 2021-05-29 06:27:41 |
| Time Uploaded: | 2021-05-29 06:27:42 |
| Submitted to: | Geysertimes.org |
| Note: | (wc) Marathon continued overnight; Overnight captures: 0025, 0100, 0157, 0256. May have quit somewhere between 0256 and 0615. At first glance only passive steam rising at the latter time. |