| Date: | 2018-08-07 |
| Time: | 1339 |
| Geyser: | Marmot Cave |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2018-08-07 21:48:58 |
| Time Updated: | 2018-09-07 15:38:49 |
| Time Uploaded: | 2018-09-07 15:38:43 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | |
| Comments: | Water rising at late 1338. Eruptive spouting at 1339-1340. Water drained out-of-sight at 1340. I filmed most of the eruptive events in the last half-hour - heights ranged from <0.5 meter to between 0.5 and 1 meter. See attachment. |
| Clip 23 of this video compilation (time stamp 12:38 to 14:23) shows Marmot Cave Geyser's 1:39 to 1:40 PM eruption on 7 August 2018 during a fill-and-drain cycle. |