Despite its name, this West Thumb pool is now intensely blue after hotter water altered the microbes that once darkened it.
Filed under roadside oddities: giant objects, odd monuments and things built for no clear reason.
Despite its name, this West Thumb pool is now intensely blue after hotter water altered the microbes that once darkened it.
Filed under roadside oddities: giant objects, odd monuments and things built for no clear reason.