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| Geyser: | Dark Cavern |
| Date/Time: | 1975-07-15 @ 1200 |
| Entrant: | research-mab |
| Observer: | 1975 log |
| Time Entered: | 2017-09-02 16:08:37 |
| Time Updated: | 2023-12-10 23:06:15 |
| Time Uploaded: | 2023-12-10 23:06:22 |
| Submitted to: | Geysertimes.org |
| Note: | 07/15/1975 - no times noted - Dark Cavern observed having minor eruptions of 30-50 sec duration every minute or so. |