<p>Looking at the back of one woman who is holding on to the railing of a boardwalk and looking into a blue colored hot spring.</p>
<p>Visitor at Black Pool at West Thumb Geyser Basin;
Diane Renkin;
June 2015;
Catalog #20158d;
Original #P1000045</p>
<ul><li>Keywords: 20158d; hot spring; thermal features in yp; yellowstone; yellowstone national park; exploring the thermal basins in summer; thermal basin; visitor activities</li></ul>
NPS/Diane Renkin
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