Echinus Geyser
Echinus was named during one of the U.S. Geological Surveys of the park in the late 1870s or early 1880s.The name Echinus comes from the spiny appearance of the cone that resembles a Sea urchin or class Echinoidea.It is speculated that there was a secondary underground water source that used to power the major eruptions and that the connection to the source was severed leading to Echinus' current state.[4] In October 2017, Echinus Geyser began to show signs of growing activity, with possible eruptions every 2-3 hours.In January 2018, Echinus' last eruption was recorded of this active phase.