Liberty cap stands at a height of 45 feet.
It received its name from the 1871 Hayden Expedition for its resemblance to the caps worn by colonial patriots in the Revolutionary War.
The cone formed from a steady flow of hot water emerging from a single source, depositing dense layers of travertine.
The cone continued to grow as long as there was a source of water.
Either the hot water spring found a more convenient underground channel to escape through or the orifice became sealed by travertine deposits.
It is now an inactive spring and it is not known when Liberty Cap became extinct.