Volcanic Springs

Geysers, Hot Springs,
Mud Pots, and Fumaroles

Shoshone Geyser Basin, Orion Group

The features of Orion Group occupy an expanded geyserite hill south of Minute Man Group. Springs from its western section drain off into Shoshone Creek, those from the eastern section into Shoshone Lake. Taurus Spring is the northernmost noteable feature of the group. It is a superheated boiling bubble-shower spring and also a little bit stronger eruptions have been observed in the past.

Taurus Spring:

Taurus Spring Shoshone Basin Yellowstone

Taurus Spring, Shoshone Geyser Basin
South of Taurus Spring the deep vent and shallow basin of Fleur-de-Lis Spring catch the eye, the contour line resembling the lily symbol in French heraldry. No spouting activity is known from this spring.

Fleur-de-Lis Spring:

Fleur-de-Lis Spring Shoshone Basin Yellowstone

Fleur-de-Lis Spring, Shoshone Geyser Basin
Fleur-de-Lis Spring is surrounded by some satellite springs. On its northwest side Yellow Boiler Spring is located.

Yellow Boiler Spring:

Yellow Boiler Spring Shoshone Basin Yellowstone

Yellow Boiler Spring, Shoshone Geyser Basin
Farther west its counterpart in terms of color, Black Boiler Spring, can be found.

Black Boiler Spring:

Yellow Boiler Spring Shoshone Basin Yellowstone

Black Boiler Spring, Shoshone Geyser Basin
Undermine Spring lies southwest of Fleur-de-Lis Spring. The vent literally undermined a small geyserite ledge.

Undermine Spring:

Undermine Spring Shoshone Basin Yellowstone

Undermine Spring, Shoshone Geyser Basin
Kitchen Spring, a few feet south of Fleur-de-Lis Spring, shows superheated boiling just like Taurus Spring. Its name origins from the use as a cooking spring by the Hayden expedition in 1878. Interestingly, Kitchen Spring's vent has two openings, one in center and one below the west geyserite rim.

Kitchen Spring:

Kitchen Spring Shoshone Basin Yellowstone

Kitchen Spring, Shoshone Geyser Basin
Adjacent to the south is SOGNN021.

SOGNN021:

Hot spring SOGNN021 Shoshone Basin Yellowstone

Hot Spring, Shoshone Geyser Basin
40 m (130 feet) west of it Eclipse Spring exhibits an expanded runoff with amazing colors.

Eclipse Spring:

Eclipse Spring Shoshone Basin Yellowstone

Eclipse Spring, Shoshone Geyser Basin
On top of the geyserite hill, which is home of the Orion Group, Union Geyser and Impenetrable Spring form a remarkable setting. A surprisingly high number of geysrite rims at different heights bear witness to long term changes of the water level in Impenetrable's steep crater.

Impenetrable Spring:

Impenetrable Spring Shoshone Basin Yellowstone

Impenetrable Spring, Shoshone Geyser Basin
Union Geyser is the largest spouter of Shoshone Basin, reaching eruption heights of 30 m (100 feet) out of its central vent, and both side vents contribute with lower water jets. Unfortunately, Union Geyser is dormant since 1977.

Union Geyser:

Union Geyser Shoshone Basin Yellowstone

Union Geyser, Shoshone Geyser Basin
The area east of Union Geyser is perforated by many vents of barely active or dried out hot springs. Obviously, hot water supply has shifted away some decades ago. Despite of its low water level the marbled funnel of Sea Green Pool, which showed eruptions up to 3 m (10 feet) back in the 1970s, is still a pretty sight.

Sea Green Pool:

Sea Green Pool Shoshone Basin Yellowstone

Sea Green Pool, Shoshone Geyser Basin
Just like Sea Green Pool also White Hot Spring was a mid-size geyser in the 1970s. Nowadays the shallow pool has almost eroded away, no water is visible in its cavernous vent, and activity is limited to slight spraying.

White Hot Spring:

White Hot Spring Shoshone Basin Yellowstone

White Hot Spring, Shoshone Geyser Basin
Moss Crater is not known as geyser, but exhibits nice geyserite formations on a second look.

Moss Crater:

Moss Crater Shoshone Basin Yellowstone

Moss Crater, Shoshone Geyser Basin
Even farther east the bathtub-shaped, boiling Marble Cliff Spring can be observed.

Marble Cliff Spring:

Marble Cliff Spring Shoshone Basin Yellowstone

Marble Cliff Spring, Shoshone Geyser Basin

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