| Date: | 2015-05-23 |
| Time: | 0856 |
| Geyser: | Gemini |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 69 seconds |
| Standardized Duration: | 1m 9s |
| Time Entered: | 2015-05-23 19:02:00 |
| Time Uploaded: | 2019-05-13 21:39:00 |
| Entrant: | LynnS |
| Observer: | LynnS, Cassidy and Connor Howard |
| Submitted to: | Geysertimes.org |
| Comments: | Another very powerful eruption. Duration was longer than durations I've recorded in recent years. Following this eruption Gemini filled, the left (north) vent bubbled, but then drained. This drain/refill/drop continued for the next 2 1/2 hours. Gemini had another series of at least two eruptions during Great Fountain's eruption. At no time while we were watching it did I see any activity from the right (south) vent except during the actual eruptions. |