| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 38055 |
21 Dec 2024 @ 1003 |
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mhreed |
Boiling at depth; occasional spritz to the surface seen. Area around vent is dry—Pump runoff currently diverted. |
| 37670 |
22 Oct 2024 @ 1214 |
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DanS |
Vigorous boiling at depth |
| 36661 |
31 Aug 2024 @ 1529 |
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Graham |
Empty and boiling at depth. |
| 35019 |
08 Jun 2024 @ 1116 |
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JSJ |
Active. |
| 34604 |
18 May 2024 @ 0859 |
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JarnoO |
(wc) Small splashing seen. Given the later reports, I suspect it's either acting as a long-duration geyser or as perpetual spouter (when not drowned by Pump's runoff). |
| 34449 |
05 May 2024 @ 1514 |
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SantaFe108 |
~3 inches below rim and bubbling. |
| 34297 |
21 Apr 2024 @ 1136 |
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SantaFe108 |
~4 inches below rim, Pump runoff trickling in. |
| 25601 |
20 May 2023 @ 1759 |
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SantaFe108 |
Began bubbling at this time with Plate, but quickly stopped. |
| 25340 |
06 May 2023 @ 1650 |
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SantaFe108 |
Green growths in vent and occasional bubbles. |
| 25250 |
26 Apr 2023 @ 1150 |
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DanS |
Vent has filled in and is now covered with colorful microbial mat from Pump runoff. |
| 24843 |
08 Jan 2023 @ 1339 |
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Graham |
Flooded with water. |
| 24183 |
02 Oct 2022 @ 1020 |
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Tara |
Water pulsating in throat of vent, no splashing. |
| 23911 |
19 Sep 2022 @ 1023 |
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Tara |
noisy sputtering from a low water level |
| 23656 |
08 Sep 2022 @ 1847 |
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Graham |
Crater is empty with no signs of having erupted. It had been flooded full before. |
| 22310 |
04 Jul 2022 @ 1510 |
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steve |
Full of water with green-brown Cyanobacteria. Some convection in the vent. |
| 21634 |
01 Jun 2022 @ 1039 |
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Tara |
Full and overflowing with orange-green bacteria lining vent and occasional small bubbles |
| 21193 |
06 May 2022 @ 2050 |
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Tara |
calm pool ~2" below rim, bacteria growing in vent |
| 19968 |
12 Oct 2021 @ 1613 |
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Ben VL |
Splashing about the same as I have seen it most of the year but with a higher water level. Water level sitting 2"-3" down from top. |
| 17435 |
04 Jun 2021 @ 1457 |
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steve |
When I came up it appeared to be a perpetual spouter to about a foot high however at 1516 it stopped and drained for 2 minutes before restarting |
| 17097 |
15 May 2021 @ 1410 |
15 May 2021 @ 1430 |
Micah Kipple |
This feature continues its activity of perpetual energetic bursting action, accompanied by a varying water level, with droplets occasionally reaching 2-3 feet. Unlike the last observation posted. I have not observed any complete pauses during my (brief) observation period. Feature requires further observation. |
| 17049 |
11 May 2021 @ 1247 |
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steve |
It appears to have the same activity that Micah noted on 5-9-21. I think the far vent qualifies as a geyser. |
| 17017 |
09 May 2021 @ 1130 |
09 May 2021 @ 1215 |
Micah Kipple |
This feature has heated up to boiling since I was last on the Hill. Sinter and bacteria mat debris is scattered around it, suggesting a blowout. If it did blowout, it wasn't big, based on the dispersal of debris.
The current activity is frequent energetic bursting to about a foot. There are pauses of several minutes where the main vent goes quiet and a side vent on the bw side of the crater sputters. It is either a frequent geyser or strong cyclic spouter right now depending on your definition. |
| 16361 |
07 Oct 2020 @ 1557 |
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steve |
Perpetual splashing to a foot or more from a low water level the last 30 minutes. Only a few droplets get above ground level. |
| 15975 |
05 Sep 2020 @ 1748 |
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Graham |
Continuous noisy splashing from depth. Droplets above the rim. |
| 15379 |
05 Aug 2020 @ 1115 |
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JarnoO |
(wc) Man stuck right hand into GHG-13's vent twice in this minute. First @ 1115:29 and for a second time @ 1115:38. It even appeared he stirred it. |
| 14765 |
29 Jun 2020 @ 0745 |
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User34 |
UNNG-GHG-13, sitting 1-2 inches below overflow. Would frequently fill to overflow with some surging and low splashing. Side vent closer to the boardwalk constantly boiling and spluttering. |
| 14746 |
27 Jun 2020 @ 1503 |
27 Jun 2020 @ 1535 |
JarnoO |
(wc) UNNG-GHG-13. Spit and splash 1503. Also spit 1514, 1515, 1535. Splash 1523. No heights were greater than about ¾ of the boardwalk. |
| 14745 |
26 Jun 2020 @ 1529 |
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JarnoO |
(wc) UNNG-GHG-13. Blipping and some single jets and splashes to the height of the boardwalk (more commonly ¼ to ½ the height) observed from 1529:50-onw. Interval between these events appear to be anywhere from ½m to minutes apart. Events themselves appear to last only seconds if you're lucky. 2 or 3 very good splashes @ 1556. |
| 2195 |
26 Aug 2015 @ 2253 |
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bhoppe |
Geyser near Pump/Sponge bench. Looked very recently post eruptive. Bench was wet. |
| 2194 |
26 Aug 2015 @ 2139 |
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Jake |
Breakout geyser near Sponge observed by Ben Hoppe. periodic steam hissing at depth 2-3 times per minute for 5-10 seconds each |