http://www.usgs.gov/faqs/why-glacier-ice-bluehttp://www.usgs.gov/faqs/why-glacier-ice-blue00· archived 5/20/2026, 8:00:45 AMscreenshotcached htmlclick to expand<h1>JavaScript is disabled</h1> In order to continue, we need to verify that you're not a robot. This requires JavaScript. Enable JavaScript and then reload the page.