Image: PorkchopGeyserYNP

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Description: Yellowstone National Park, Wyoming. Porkchop Geyser in Norris Geyser Basin hours after its eruption of September 3, 1972. Normally clear of opalescent blue with slightly surging minor discharge, it is shown here as nearly empty but refilling. Note details and colors of opaline sinters above (white and gray) and below (tan) normal water level. The rock near the center is about 4 centimeters in diameter. September 3, 1972. Figure 11, U.S. Geological Survey Professional paper 1456.
Title: PorkchopGeyserYNP
Credit: Downloaded from USGS: http://libraryphoto.cr.usgs.gov/htmllib/batch28/batch28j/batch28z/batch28/wde00009.jpg
Author: D. E. White
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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List of Yellowstone geothermal features

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