Steam vents and milky-blue silica-rich pools, Norris Geyser Basin Yell

Detailed Description
Porcelain Terrace area of Norris Geyser Basin. Note steam vents in the foreground and many milky-blue silica depositing pools in the distance. The broad area of white deposits is silica sinter deposited in this case from acidic Cl-rich hot spring waters.
Sources/Usage
Public Domain.