| Date: | 1950-06-17 |
| Time: | 0000 A |
| Geyser: | Black Sand Pool |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2022-06-24 21:32:23 |
| Time Uploaded: | 2022-06-24 21:32:23 |
| Entrant: | mhreed |
| Observer: | Marler (1950) annual report |
| Submitted to: | |
| Comments: | No time available. From pg. 2: "On June 17 the Black Sand Pool was observed playing to a height of about 12 feet." Marler writes that this is the first known geyser activity of this feature, but Whittlesey in Wonderland Nomenclature (pg. 106) found a reference to it erupting (height 15–20 ft) in 1895. |