Last Known Eruption
49d 5h 18m ago

Interval Statistics

Interval Count92
Min0m
Max219d 21h 57m
Mean14d 12h 46m
Median2m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
40249 06 Jul 2025 @ 0821 --- MAB breakout hole splashing - no activity seen from former main vent
40116 28 Jun 2025 @ 1447 --- MAB former main vent fills and drops - not really an eruption - breakout hole behind splashes reach above ground level
40161 23 Jun 2025 @ 1106 --- Falkaroa Small deep hole furthest from trail was noisily grumbling and ejecting small drops of water every second or so.
39942 20 Jun 2025 @ 0823 --- MAB former main vent full then dropped- sm bubbles then began a slow refill- broken hole vent behind erupting with angled 10-12in splashes
39849 13 Jun 2025 @ 1358 --- MAB area by former main vent flooded w a few bubbles but didn't not see increase in activity or pool drop over 5 min
39839 13 Jun 2025 @ 0916 --- MAB West vent flooded - sm bubbles from main vent did not stay
39484 29 May 2025 @ 0922 --- MAB former main vent had a few bubbles - broken hole vent with noisy spritzes above ground- gravel cleared vent to NE steamy but looks the same size
39220 21 May 2025 @ 1047 --- MAB NPR8 Trinket Geyser - broken hole ie with above ground spritzes - former main vent quiet w goo - close to walk vent fairly dry - Gravel hole vent beyond to E steamy
38697 27 Apr 2025 @ 0918 --- MAB larger splashes visible from the circular broken hole 1m past vent - no water visible in the gravel washed newer vent 1m NE past that - hot steamy gravel area ssw of Trinket towards Crackling Lake
38497 19 Apr 2025 @ 0943 --- MAB Trinket - main vent silted in w gray goo - west vent more enclosed bubbling clear water - far (east) vent broke through - hot spot near bw to NE has cooled
38420 10 Apr 2025 @ 1330 --- SantaFe108 Full and calm. Hole to the immediate back-left spitting water from depth loudly.
38279 23 Feb 2025 @ 1455 --- K.Cooper Brown and grey and overflowing but not erupting. evidence of recent small explosion with debris around a 1ft in diameter new hole behind and too the left of NPR8
37817 29 Oct 2024 @ 0859 --- MAB looks better - water clearer w larger bubbles but didn't stay to see if it stopped and drained - little sandy vent has a little 3in fry pan closest to Trinket - the rest still without water
37767 25 Oct 2024 @ 1632 --- MAB caught it in the act - 3 blips then drain - and repeat. Also noticed the same mud sludge in other nearby holes that used to be sinter white
37719 24 Oct 2024 @ 1522 --- SantaFe108 Inactive, below overflow. Water is murky brown and runoff channels are dry.
37676 22 Oct 2024 @ 0844 --- MAB main vent still flooded - dark deposit in outwash area - little sandy vent closest to bw quiet
37498 10 Oct 2024 @ 1235 --- SantaFe108 Not active. In overflow, with occasional bubble.
29054 22 Oct 2023 @ 1437 --- SantaFe108 Appears perpetual. West vent sputtering through sand.
29194 24 Aug 2023 @ 1200 --- research-mab 8/24 - no time noted - “Ghost” Geyser visible cycle {npr8 Trinket}
24059 24 Sep 2022 @ 1114 --- MAB weak IE - seems to slow in intensity but never truly stopped or drained - west vent same w murky brown continuous boil
23640 07 Sep 2022 @ 0944 --- MAB main vent full with steady sm bubbles - west vent muddy w large bubbles
23251 18 Aug 2022 @ 1835 --- MAB blips in main vent but much lower water level - that other vent closer to the walk still in a busy boil w cloudy water
22666 17 Jul 2022 @ 0843 17 Jul 2022 @ 0849 MAB west vent steady boil w dirty water - watched main vent 5min with tiny strings of bubbles with no change
29082 09 Jul 2022 @ 1200 --- research-mab - no time noted - 7/9/22 Possibly new hole @ ghost snack {npr8 Trinket mab}
29065 29 May 2022 @ 1200 --- research-mab 5/29 “Fruitsnack” Spring (feature E of Whales Mouth) runoff channel turned from bright orange to completely white. {no time noted}
21477 25 May 2022 @ 0804 --- TSBryan marginally intermittent, interval 5-10 sec complete quiet, 10-15 sec splashes 6-10 inches
37099 01 Sep 2019 @ 0000 --- research-mab ~exact date unknown~ UNNG-NPR-8 “Trinket Geyser” Small geyser on the flat ~116 feet NE of Yellow Crown Crater, first known recent report via S. Eide Autumn 2019 {SPUT Vol 3 #5} after the Whale’s Mouth section of boardwalk reopened (closed ~2 years); possibly active in Spring of 1986. Informally named due to proximity to the Crown Jewels Springs area. NOTE: this was not present during the NPS 2018 Thermal Inventory per photo documentation. (Entries largely appear after it was added to the GT database in Oct 2021.)
No attachments for this geyser.
Baseline does not exist.