| Date: | 1980-07-21 |
| Time: | 1053:15 |
| Geyser: | Dark Cavern |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | 5m31s |
| Standardized Duration: | 5m 31s |
| Time Entered: | 2017-08-04 06:50:33 |
| Time Uploaded: | 2019-05-13 21:45:00 |
| Entrant: | research-mab |
| Observer: | 1980 Log |
| Submitted to: | Geysertimes.org |
| Comments: | interval majors 23:38 |