Uploaded May 2022 | Updated September 2026, 2 weeks ago
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Pink Cone Geyser (5 June 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.
Pink Cone Geyser is the namesake of the Pink Cone Group in Yellowstone’s Lower Geyser Basin. The vent is surrounded by a low, nearly symmetrical, moderately steep-sided geyserite cone that is colored dark reddish-brown. The coloration is attributed to manganese impurities. The cone was originally covered in finely nodulose geyserite, but since the late 1800s, vandalism by people and trodding by non-native, hybrid buffalo have removed almost all of it.
An eruption occurs about once a day (18 to 27 hours or so). Eruption durations are between 1.5 and 2 hours. The latter parts of a Pink Cone Geyser eruption involve alternating water-phase spouting and steam-rich emissions. Forced steam emissions become increasingly common and less forceful near the end of the eruption. Eruption cessations are marked by sustained passive steaming. Occasional, slightly forced steam billowing occurs afterward. Mid-cycle activity is rare.
Filmed from Firehole Lake Drive.
Clips 1-23 - Pink Cone Geyser’s 7:38 to 9:23 AM eruption on 5 June 2021.
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Pink Cone Geyser (5 June 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.
Pink Cone Geyser is the namesake of the Pink Cone Group in Yellowstone’s Lower Geyser Basin. The vent is surrounded by a low, nearly symmetrical, moderately steep-sided geyserite cone that is colored dark reddish-brown. The coloration is attributed to manganese impurities. The cone was originally covered in finely nodulose geyserite, but since the late 1800s, vandalism by people and trodding by non-native, hybrid buffalo have removed almost all of it.
An eruption occurs about once a day (18 to 27 hours or so). Eruption durations are between 1.5 and 2 hours. The latter parts of a Pink Cone Geyser eruption involve alternating water-phase spouting and steam-rich emissions. Forced steam emissions become increasingly common and less forceful near the end of the eruption. Eruption cessations are marked by sustained passive steaming. Occasional, slightly forced steam billowing occurs afterward. Mid-cycle activity is rare.
Filmed from Firehole Lake Drive.
Clips 1-23 - Pink Cone Geyser’s 7:38 to 9:23 AM eruption on 5 June 2021.
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![Big Anemone Geyser (2024)
Big Anemone Geyser (2024)
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.
Big Anemone Geyser is a frequently erupting small geyser in the southern Geyser Hill Group of Yellowstones Geyser Hill Group. It is immediately adjacent to Little Anemone Geyser - together they make up “Anemone Geyser”. Big Anemone has a nearly circular basin with a central vent and lacks a well-defined border. Encircling the cream-colored to grayish, smooth geyserite-floored vent area is abundant, well-formed, closely spaced nodules of grayish geyserite (columnar geyserite & pseudocolumnar geyserite), similar in appearance to cave popcorn (coralloids). Some small biscuit-like masses of grayish geyserite are present on the northern side of the geyser, often with apical puckered structures. The geyserite biscuits are in and along a small, irregularly-shaped, eruption splash pool. The diameter of Big Anemone Geyser, as measured across its nodulose geyserite area, is about 2.5 meters. The diameter, as measured from the outer edge of the colorful, encircling microbial mats, is about 4.5 to 5 meters.
Big Anemone’s geyserite is especially well-formed and attractive. Geyserite is a friable to solid chemical sedimentary rock composed of opal (hydrous silica, a.k.a. opaline silica: SiO2•nH2O), It forms by precipitation of hydrous silica from hot spring water. Geyserite is the dominant material at & around Yellowstone hot springs and geysers (the Mammoth Hot Springs area is a major exception to this). The silica in the geyserite is ultimately derived from leaching of subsurface, late Cenozoic-aged rhyolitic rocks by superheated groundwater. Rhyolite is an abundant rock at Yellowstone.
Big Anemone Geyser has frequent, moderately low to medium-sized, splashing eruptions. Eruption durations are about half a minute long. Intervals between eruptions starts range from about 7 minutes to almost half-an-hour. Eruption cessations at Big Anemone Geyser consist of rapid pool drains. Most of the erupted water ends up back in its own vent. Some eruption splash water enters Little Anemone’s basin or its runoff channel.
Geyser Hill Group videos:
https://www.youtube.com/playlist?list=PL8dL6UmmXTBUMW6oQAafxBFkkAvXyDrE3
Clip 1 - Big Anemone Geyser’s 4:32 PM eruption on 11 June 2024.
Clip 2 - Big Anemone Geyser’s 4:41 to 4:42 PM eruption on 11 June 2024. [time stamp 0:47]
Clip 3 - Big Anemone Geyser’s 4:52 PM eruption on 11 June 2024. [time stamp 1:32] Big Anemone Geyser (2024)](https://i.ytimg.com/vi/QtY6k2dMhhU/mqdefault.jpg)

