View of Monument Geyser Basin looking NE. Dozens of steam vents occur in this area and form fumaroles, frying pans, mud pots, and in some cases have built silica-rich "monuments" (which lend the basin its name). This is an isolated area dominated by steam vents.
Pat Shanks. Public domain.
<a rel="nofollow" class="external text" href="https://www.usgs.gov/media/images/barren-ground-monument-geyser-basin-yellowstone-national-park">U.S. Geological Survey</a>