Uploaded May 2022 | Updated September 2026, 2 weeks ago
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East Tangled Geyser (2021)
Geysers are hot springs that episodically erupt columns of water. They occur in few places on Earth. The highest concentration of geysers anywhere is at the Yellowstone Hotspot Volcano in northwestern Wyoming, USA.
UNNG-TGG-1 is an unnamed fountain-type geyser, here referred to as “East Tangled Geyser”, in the Tangled Group (a.k.a. Tangled Creek Group; Tangled Geysers; Tangled Geysers Group) of Yellowstone’s Lower Geyser Basin. The geyser is located in a ~5 x ~4 meter-sized, subcircular depression along Tangled Creek near the eastern margin of this hot spring group, which is northwest of White Dome Geyser (44° 32’ 26.57” North latitude, 110° 48’ 16.99” West longitude). The off-center vent is about a half-meter in diameter. In 2014, East Tangled Geyser was erupting frequently - every 4 to 7 minutes - with durations less than 30 seconds. In 2015, its behavior was more erratic, in terms of eruption intervals and durations. During the daytime of 26 May 2015, this feature had no eruptive activity at all. July to August 2015 behavior included some minor eruptions, during which no high spouting occurred. Sometimes, visible blipping from the geyser (which usually indicates that an eruption is imminent) would result in no follow-up eruption. Compared with its 2014 activity, many eruptions in 2015 were over 30 seconds long - some were over 1 minute in duration.
In summer 2016, East Tangled Geyser’s eruptions were less than 30 seconds in duration, and usually less than 20 seconds. A longer-duration eruption of ~42 to 45 seconds was seen on 2 June 2016. Intervals (= eruption start to eruption start) in late May and early June 2016 ranged from 5 to 12 minutes. In July 2016, intervals were 5 to 7 minutes. In August 2016, intervals were 3 to 6 minutes.
In summer 2017, eruptions were nearly regular, but with longer intervals and durations than in 2016. In June 2017, eruption durations ranged from ~34 to ~49 seconds, with intevals of 8 to 14 minutes (most were 9 to 11 minutes). Sometimes, a brief pause occurred about midway through an eruption. In late July 2017, eruption durations ranged from ~32 to ~42 seconds, with regular intervals of 8 to 10 minutes. The geyser was still active in August 2017.
In June 2018, eruptions were about 45 seconds in duration, with intervals ranging from 26 to 37 minutes - impressively long for this feature. No eruptions were observed or reported after June 2018. The geyser apparently had a dormancy from then until August 2019. No eruptive activity was seen or reported in June 2019. August 2019 eruptions were about 45 to 50 seconds in duration, with intervals ranging from 28 to 45 minutes. August 2020 activity consisted of ~0.75 to ~1 minute duration eruptions every 22 to 35 minutes. Late May to early June 2021 activity usually consisted of 1 to 1.5 minute duration eruptions every ~0.75 to 1.5 hours. An occasional short duration eruption (e.g., less than 30 seconds) would be followed by a short interval (e.g., 13 minutes).
Filmed from the White Dome Geyser boardwalk. All clips have been muted - there is no natural sound from the geyser.
Clip 1 - East Tangled Geyser’s 1:35 to 1:36 PM eruption on 7 June 2021.
Clip 2 - East Tangled Geyser’s 2:34 to 2:35 PM eruption on 7 June 2021. (time stamp 1:05)
Clip 3 - East Tangled Geyser’s 3:23 to 3:24 PM eruption on 7 June 2021. (time stamp 2:01)
Clip 4 - East Tangled Geyser’s 4:26 to 4:27 PM eruption on 7 June 2021. (time stamp 2:56)
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East Tangled Geyser (2021)
Geysers are hot springs that episodically erupt columns of water. They occur in few places on Earth. The highest concentration of geysers anywhere is at the Yellowstone Hotspot Volcano in northwestern Wyoming, USA.
UNNG-TGG-1 is an unnamed fountain-type geyser, here referred to as “East Tangled Geyser”, in the Tangled Group (a.k.a. Tangled Creek Group; Tangled Geysers; Tangled Geysers Group) of Yellowstone’s Lower Geyser Basin. The geyser is located in a ~5 x ~4 meter-sized, subcircular depression along Tangled Creek near the eastern margin of this hot spring group, which is northwest of White Dome Geyser (44° 32’ 26.57” North latitude, 110° 48’ 16.99” West longitude). The off-center vent is about a half-meter in diameter. In 2014, East Tangled Geyser was erupting frequently - every 4 to 7 minutes - with durations less than 30 seconds. In 2015, its behavior was more erratic, in terms of eruption intervals and durations. During the daytime of 26 May 2015, this feature had no eruptive activity at all. July to August 2015 behavior included some minor eruptions, during which no high spouting occurred. Sometimes, visible blipping from the geyser (which usually indicates that an eruption is imminent) would result in no follow-up eruption. Compared with its 2014 activity, many eruptions in 2015 were over 30 seconds long - some were over 1 minute in duration.
In summer 2016, East Tangled Geyser’s eruptions were less than 30 seconds in duration, and usually less than 20 seconds. A longer-duration eruption of ~42 to 45 seconds was seen on 2 June 2016. Intervals (= eruption start to eruption start) in late May and early June 2016 ranged from 5 to 12 minutes. In July 2016, intervals were 5 to 7 minutes. In August 2016, intervals were 3 to 6 minutes.
In summer 2017, eruptions were nearly regular, but with longer intervals and durations than in 2016. In June 2017, eruption durations ranged from ~34 to ~49 seconds, with intevals of 8 to 14 minutes (most were 9 to 11 minutes). Sometimes, a brief pause occurred about midway through an eruption. In late July 2017, eruption durations ranged from ~32 to ~42 seconds, with regular intervals of 8 to 10 minutes. The geyser was still active in August 2017.
In June 2018, eruptions were about 45 seconds in duration, with intervals ranging from 26 to 37 minutes - impressively long for this feature. No eruptions were observed or reported after June 2018. The geyser apparently had a dormancy from then until August 2019. No eruptive activity was seen or reported in June 2019. August 2019 eruptions were about 45 to 50 seconds in duration, with intervals ranging from 28 to 45 minutes. August 2020 activity consisted of ~0.75 to ~1 minute duration eruptions every 22 to 35 minutes. Late May to early June 2021 activity usually consisted of 1 to 1.5 minute duration eruptions every ~0.75 to 1.5 hours. An occasional short duration eruption (e.g., less than 30 seconds) would be followed by a short interval (e.g., 13 minutes).
Filmed from the White Dome Geyser boardwalk. All clips have been muted - there is no natural sound from the geyser.
Clip 1 - East Tangled Geyser’s 1:35 to 1:36 PM eruption on 7 June 2021.
Clip 2 - East Tangled Geyser’s 2:34 to 2:35 PM eruption on 7 June 2021. (time stamp 1:05)
Clip 3 - East Tangled Geyser’s 3:23 to 3:24 PM eruption on 7 June 2021. (time stamp 2:01)
Clip 4 - East Tangled Geyser’s 4:26 to 4:27 PM eruption on 7 June 2021. (time stamp 2:56)
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