| Date: | 1973-08-27 |
| Time: | 1345 |
| Geyser: | Dark Cavern |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2017-09-08 07:56:48 |
| Time Uploaded: | 2017-10-02 14:28:45 |
| Entrant: | research-mab |
| Observer: | 1973 log |
| Submitted to: | |
| Comments: | seen with an exceptionally vertical eruption in morning; at 1:45 it was observed in a very powerful steam eruption that went vertical ~ 20-25 ft. from the SE vent muddy {grey} water was gushing from NW vent {out ~1 yd |