Liberty Cap, Mammoth Hot Springs

This is one of the many features of Mammoth Hot Springs, Yellowstone National Park, Wyoming, US. Taken on the second day of an amazing week's trip from Calgary with friends, Linda and Tony, from England.

"This 37-foot (11-m) hot spring cone marks the northern portion of Mammoth Hot Springs. Liberty Cap was named in 1871 by the Hayden Survey party because of its marked resemblance to the peaked caps worn during the French Revolution. Its unusual formation was created by a hot spring whose plumbing remained open and in one location for a long time. Its internal pressure was sufficient to raise the water to a great height, allowing mineral deposits to build continuously for perhaps hundreds of years."

mms.nps.gov/yell/features/mammothtour/librtcap.htm