Operating. . .
| Geyser: | Dark Cavern |
| Date/Time: | 1977-06-28 @ 1200 |
| Entrant: | research-mab |
| Observer: | 1977 log |
| Time Entered: | 2017-08-19 22:28:20 |
| Time Updated: | 2023-12-07 07:34:25 |
| Time Uploaded: | 2023-12-07 07:34:24 |
| Submitted to: | Geysertimes.org |
| Note: | 06/28/1977 - no times - Dark Cavern geyser has become less active, with eruptions every 5-10 minutes rather than the 2-3 minutes noted before. The geyser also appears to be less powerful. |