| Date: | 1931-07-31 |
| Time: | 0900 |
| Geyser: | Dark Cavern |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 1m |
| Standardized Duration: | 1m |
| Time Entered: | 2018-12-28 10:35:49 |
| Time Uploaded: | 2019-05-13 21:41:03 |
| Entrant: | research-mab |
| Observer: | Arthur Nash Geo Box 98 |
| Submitted to: | Geysertimes.org |
| Comments: | 20 ft – Hillside Geyser |