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| Geyser: | Dark Cavern |
| Date/Time: | 1976-09-08 @ 1900 |
| Entrant: | research-mab |
| Observer: | 1976 Norris log |
| Time Entered: | 2023-12-10 07:55:18 |
| Time Uploaded: | 2023-12-10 07:55:18 |
| Submitted to: | Geysertimes.org |
| Note: | 09/08/1976 - no time noted - {"last night" in 9-9 log} Dark Cavern was observed for a period of about 40 minutes last night. It was found that the interval between eruptions was nearly always 7 ½ minutes with eruptions lasting between 5 & 6 minutes. Nearly half of the eruption time was taken up by minor play, with a forceful blast of water lasting around 3 minutes. |