Big Cone
Big Cone is a geyser in the Geothermal areas of Yellowstone#West Thumb [Geyser Basin|West Thumb Geyser Basin] of Yellowstone [National Park] in the United States.
Big Cone is a wide sinter cone that rises from Yellowstone Lake about from the shoreline. The vent of the cone is wide. At times of increased water level in the lake, the cone may be submerged completely. Big Cone is known to undergo rare eruptions 1 foot high or less.