I’m at the Big Spring in Thermopolis.  This naturally hot water creates one of the biggest attractions here, the hot water pools.  In Greek the name Thermopolis means “Hot City.”

The water in the Hot Springs is thought to originate in the Owl Creek Mountains, just west of Thermopolis.  When water falls as rain or snow some of it makes its way deep underground.  Eventually that water is forced up through crevices in the ground at the springs in the state park.

While underground the water is heated and is about 127 degrees F. where it surfaces.  The water also picks up 27 different minerals while under the earth’s surface.  The terraces that make up the spring are made up mostly of lime and gypsum.  Which come up with the water and then separate out from the water as it cools.  The brilliant colors found here are due to algae, which is a primitive plant, that thrives in the warm water.

Native Americans have been using these springs for at least 2000 years.  And today they are enjoyed by locals and tourists alike.  Many believe that the water has healing powers and that regular use leads to a longer life.

So next time you feel an aching in your bones or just want a fun swim, come enjoy another wonder of Wyoming in Thermopolis.

From the University of Wyoming Cooperative Extension Service, I’m Barton Stam.